Combining the Terms with the Same Power of x

Oct 13, 2025 by talynt.org 123 views

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Introduction

In algebra, the product of two polynomials is a fundamental concept that is used extensively in various mathematical operations. In this article, we will focus on finding the product of two given polynomials, $\left(3x^3 - 2\right)\left(4x^4 - 3x + 8\right)$ , and complete the expression.

Understanding Polynomial Multiplication

Polynomial multiplication is a process of multiplying two or more polynomials to obtain a new polynomial. The resulting polynomial is obtained by multiplying each term of the first polynomial with each term of the second polynomial and then combining like terms.

The Distributive Property

The distributive property is a key concept in polynomial multiplication. It states that for any polynomials $f(x)$ , $g(x)$ , and $h(x)$ , the following equation holds:

$f(x) \cdot (g(x) + h(x)) = f(x) \cdot g(x) + f(x) \cdot h(x)$

This property allows us to expand the product of two polynomials by multiplying each term of the first polynomial with each term of the second polynomial.

Finding the Product of the Given Polynomials

To find the product of the given polynomials, we will use the distributive property to expand the product.

Step 1: Multiply the First Polynomial with the First Term of the Second Polynomial

We will start by multiplying the first polynomial, $3x^3 - 2$ , with the first term of the second polynomial, $4x^4$ .

$(3x^3 - 2) \cdot (4x^4) = 12x^7 - 8x^4$

Step 2: Multiply the First Polynomial with the Second Term of the Second Polynomial

Next, we will multiply the first polynomial, $3x^3 - 2$ , with the second term of the second polynomial, $-3x$ .

$(3x^3 - 2) \cdot (-3x) = -9x^4 + 6x$

Step 3: Multiply the First Polynomial with the Third Term of the Second Polynomial

Finally, we will multiply the first polynomial, $3x^3 - 2$ , with the third term of the second polynomial, $8$ .

$(3x^3 - 2) \cdot 8 = 24x^3 - 16$

Combining Like Terms

Now that we have multiplied each term of the first polynomial with each term of the second polynomial, we need to combine like terms to simplify the expression.

Combining the Terms with the Same Power of x

We can combine the terms with the same power of $x$ by adding or subtracting their coefficients.

$12x^7 - 8x^4 - 9x^4 + 24x^3 + 6x - 16$

Simplifying the Expression

Simplifying the expression, we get:

$12x^7 - 17x^4 + 24x^3 + 6x - 16$

Conclusion

In this article, we have found the product of two given polynomials, $\left(3x^3 - 2\right)\left(4x^4 - 3x + 8\right)$ , and completed the expression. We used the distributive property to expand the product and then combined like terms to simplify the expression.

The Final Answer

The final answer is:

$\boxed{12x^7 - 17x^4 + 24x^3 + 6x - 16}$

Key Takeaways

The product of two polynomials is obtained by multiplying each term of the first polynomial with each term of the second polynomial and then combining like terms.
The distributive property is a key concept in polynomial multiplication.
Combining like terms is an essential step in simplifying the expression.

Practice Problems

To practice polynomial multiplication, we recommend the following problems:

Multiply the polynomials $2x^2 + 3x - 1$ and $4x^2 - 2x + 5$ .
Multiply the polynomials $x^3 - 2x^2 + 3x - 1$ and $2x^2 + 3x - 1$ .

Conclusion

In conclusion, polynomial multiplication is a fundamental concept in algebra that is used extensively in various mathematical operations. By understanding the distributive property and combining like terms, we can simplify complex expressions and solve problems in algebra.

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Q&A: Polynomial Multiplication

Q: What is polynomial multiplication?

A: Polynomial multiplication is the process of multiplying two or more polynomials to obtain a new polynomial. The resulting polynomial is obtained by multiplying each term of the first polynomial with each term of the second polynomial and then combining like terms.

Q: What is the distributive property in polynomial multiplication?

A: The distributive property is a key concept in polynomial multiplication. It states that for any polynomials $f(x)$ , $g(x)$ , and $h(x)$ , the following equation holds:

$f(x) \cdot (g(x) + h(x)) = f(x) \cdot g(x) + f(x) \cdot h(x)$

This property allows us to expand the product of two polynomials by multiplying each term of the first polynomial with each term of the second polynomial.

Q: How do I multiply two polynomials?

A: To multiply two polynomials, you need to follow these steps:

Multiply each term of the first polynomial with each term of the second polynomial.
Combine like terms to simplify the expression.

Q: What are like terms in polynomial multiplication?

A: Like terms are terms that have the same power of $x$ . For example, $2x^2$ and $3x^2$ are like terms because they both have the same power of $x$ , which is $x^2$ .

Q: How do I combine like terms in polynomial multiplication?

A: To combine like terms, you need to add or subtract their coefficients. For example, if you have the terms $2x^2$ and $3x^2$ , you can combine them by adding their coefficients:

$2x^2 + 3x^2 = 5x^2$

Q: What is the final answer in polynomial multiplication?

A: The final answer in polynomial multiplication is the simplified expression obtained by multiplying each term of the first polynomial with each term of the second polynomial and then combining like terms.

Q: Can I use a calculator to multiply polynomials?

A: Yes, you can use a calculator to multiply polynomials. However, it's always a good idea to check your work by multiplying the polynomials manually to ensure that you get the correct answer.

Q: What are some common mistakes to avoid in polynomial multiplication?

A: Some common mistakes to avoid in polynomial multiplication include:

Forgetting to multiply each term of the first polynomial with each term of the second polynomial.
Not combining like terms correctly.
Making errors when multiplying or adding coefficients.

Q: How can I practice polynomial multiplication?

A: You can practice polynomial multiplication by working on problems and exercises that involve multiplying polynomials. You can also use online resources, such as Khan Academy or Mathway, to practice polynomial multiplication.

Q: What are some real-world applications of polynomial multiplication?

A: Polynomial multiplication has many real-world applications, including:

Calculating the area of a rectangle or a triangle.
Finding the volume of a cube or a rectangular prism.
Solving problems in physics, engineering, and computer science.

Q: Can I use polynomial multiplication to solve systems of equations?

A: Yes, you can use polynomial multiplication to solve systems of equations. By multiplying the equations together, you can eliminate variables and solve for the remaining variables.

Q: What are some advanced topics in polynomial multiplication?

A: Some advanced topics in polynomial multiplication include:

Polynomial long division.
Synthetic division.
Polynomial factoring.

Q: How can I learn more about polynomial multiplication?

A: You can learn more about polynomial multiplication by reading books, taking online courses, or working with a tutor. You can also practice polynomial multiplication by working on problems and exercises that involve multiplying polynomials.

Q: What are some common mistakes to avoid in advanced polynomial multiplication?

A: Some common mistakes to avoid in advanced polynomial multiplication include:

Not following the correct order of operations.
Making errors when multiplying or adding coefficients.
Not simplifying the expression correctly.

Q: How can I practice advanced polynomial multiplication?

A: You can practice advanced polynomial multiplication by working on problems and exercises that involve polynomial long division, synthetic division, and polynomial factoring. You can also use online resources, such as Khan Academy or Mathway, to practice advanced polynomial multiplication.

Q: What are some real-world applications of advanced polynomial multiplication?

A: Advanced polynomial multiplication has many real-world applications, including:

Calculating the area of a complex shape.
Finding the volume of a complex solid.
Solving problems in physics, engineering, and computer science.

Q: Can I use advanced polynomial multiplication to solve systems of equations?

A: Yes, you can use advanced polynomial multiplication to solve systems of equations. By multiplying the equations together, you can eliminate variables and solve for the remaining variables.

Q: What are some common mistakes to avoid in polynomial multiplication with complex numbers?

A: Some common mistakes to avoid in polynomial multiplication with complex numbers include:

Not following the correct order of operations.
Making errors when multiplying or adding coefficients.
Not simplifying the expression correctly.

Q: How can I practice polynomial multiplication with complex numbers?

A: You can practice polynomial multiplication with complex numbers by working on problems and exercises that involve multiplying polynomials with complex coefficients. You can also use online resources, such as Khan Academy or Mathway, to practice polynomial multiplication with complex numbers.

Q: What are some real-world applications of polynomial multiplication with complex numbers?

A: Polynomial multiplication with complex numbers has many real-world applications, including:

Calculating the area of a complex shape.
Finding the volume of a complex solid.
Solving problems in physics, engineering, and computer science.

Q: Can I use polynomial multiplication with complex numbers to solve systems of equations?

A: Yes, you can use polynomial multiplication with complex numbers to solve systems of equations. By multiplying the equations together, you can eliminate variables and solve for the remaining variables.

Q: What are some common mistakes to avoid in polynomial multiplication with rational expressions?

A: Some common mistakes to avoid in polynomial multiplication with rational expressions include:

Not following the correct order of operations.
Making errors when multiplying or adding coefficients.
Not simplifying the expression correctly.

Q: How can I practice polynomial multiplication with rational expressions?

A: You can practice polynomial multiplication with rational expressions by working on problems and exercises that involve multiplying polynomials with rational coefficients. You can also use online resources, such as Khan Academy or Mathway, to practice polynomial multiplication with rational expressions.

Q: What are some real-world applications of polynomial multiplication with rational expressions?

A: Polynomial multiplication with rational expressions has many real-world applications, including:

Calculating the area of a complex shape.
Finding the volume of a complex solid.
Solving problems in physics, engineering, and computer science.

Q: Can I use polynomial multiplication with rational expressions to solve systems of equations?

A: Yes, you can use polynomial multiplication with rational expressions to solve systems of equations. By multiplying the equations together, you can eliminate variables and solve for the remaining variables.

Q: What are some common mistakes to avoid in polynomial multiplication with variables on both sides?

A: Some common mistakes to avoid in polynomial multiplication with variables on both sides include:

Not following the correct order of operations.
Making errors when multiplying or adding coefficients.
Not simplifying the expression correctly.

Q: How can I practice polynomial multiplication with variables on both sides?

A: You can practice polynomial multiplication with variables on both sides by working on problems and exercises that involve multiplying polynomials with variables on both sides. You can also use online resources, such as Khan Academy or Mathway, to practice polynomial multiplication with variables on both sides.

Q: What are some real-world applications of polynomial multiplication with variables on both sides?

A: Polynomial multiplication with variables on both sides has many real-world applications, including:

Calculating the area of a complex shape.
Finding the volume of a complex solid.
Solving problems in physics, engineering, and computer science.

Q: Can I use polynomial multiplication with variables on both sides to solve systems of equations?

A: Yes, you can use polynomial multiplication with variables on both sides to solve systems of equations. By multiplying the equations together, you can eliminate variables and solve for the remaining variables.

Q: What are some common mistakes to avoid in polynomial multiplication with exponents?

A: Some common mistakes to avoid in polynomial multiplication with exponents include:

Not following the correct order of operations.
Making errors when multiplying or adding coefficients.
Not simplifying the expression correctly.

Q: How can I practice polynomial multiplication with exponents?

A: You can practice polynomial multiplication with exponents by working on problems and exercises that involve multiplying polynomials with exponents. You can also use online resources, such as Khan Academy or Mathway, to practice polynomial multiplication with exponents.

Q: What are some real-world applications of polynomial multiplication with exponents?

A: Polynomial multiplication with exponents has many real-world applications, including:

Calculating the area of a complex shape.
Finding the volume of a complex solid.
Solving problems in physics, engineering, and computer science.

Q: Can I use polynomial multiplication with exponents to solve systems of equations?

A: Yes, you can use polynomial multiplication with exponents to solve systems of equations. By multiplying the equations together, you can eliminate variables and solve for the remaining variables.

Q: What are some common mistakes to avoid in polynomial multiplication with negative exponents?

A: Some common mistakes to avoid in polynomial multiplication with negative exponents include:

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