Finding the Sum of B and C

Oct 13, 2025 by leolavanderia.com.br 83 views

Understanding the Polynomials A, B, and C

In this problem, we are given three polynomials: A, B, and C. The polynomial A is represented as 3x - 4, the polynomial B is represented as x + 7, and the polynomial C is represented as x^2 + 2. We are asked to find the simplest form of the expression A^2 - (B + C).

Squaring the Polynomial A

To find A^2, we need to square the polynomial A. This means we need to multiply the polynomial A by itself. Using the distributive property, we can write:

A^2 = (3x - 4)(3x - 4)

Expanding this expression, we get:

A^2 = 9x^2 - 24x + 16

Finding the Sum of B and C

To find B + C, we need to add the polynomials B and C. This means we need to combine like terms. Using the distributive property, we can write:

B + C = (x + 7) + (x^2 + 2)

Combining like terms, we get:

B + C = x^2 + x + 9

Simplifying the Expression A^2 - (B + C)

Now that we have found A^2 and B + C, we can simplify the expression A^2 - (B + C). We can write:

A^2 - (B + C) = (9x^2 - 24x + 16) - (x^2 + x + 9)

Using the distributive property, we can rewrite this expression as:

A^2 - (B + C) = 9x^2 - 24x + 16 - x^2 - x - 9

Combining like terms, we get:

A^2 - (B + C) = 8x^2 - 25x + 7

Conclusion

In this problem, we were given three polynomials: A, B, and C. We were asked to find the simplest form of the expression A^2 - (B + C). To do this, we first squared the polynomial A, then found the sum of B and C, and finally simplified the expression A^2 - (B + C). The final answer is 8x^2 - 25x + 7.

Step-by-Step Solution

Square the polynomial A: A^2 = (3x - 4)(3x - 4)
Expand the expression A^2: A^2 = 9x^2 - 24x + 16
Find the sum of B and C: B + C = (x + 7) + (x^2 + 2)
Combine like terms: B + C = x^2 + x + 9
Simplify the expression A^2 - (B + C): A^2 - (B + C) = (9x^2 - 24x + 16) - (x^2 + x + 9)
Rewrite the expression using the distributive property: A^2 - (B + C) = 9x^2 - 24x + 16 - x^2 - x - 9
Combine like terms: A^2 - (B + C) = 8x^2 - 25x + 7

Final Answer

The final answer is 8x^2 - 25x + 7.

Understanding the Polynomials A, B, and C

Q&A Session

Q: What is the first step in simplifying the expression A^2 - (B + C)?

A: The first step is to square the polynomial A. This means we need to multiply the polynomial A by itself.

Q: How do we expand the expression A^2?

A: We can expand the expression A^2 by using the distributive property. This means we need to multiply each term in the polynomial A by each term in the polynomial A.

Q: What is the sum of B and C?

A: The sum of B and C is found by adding the polynomials B and C. This means we need to combine like terms.

Q: How do we simplify the expression A^2 - (B + C)?

A: We can simplify the expression A^2 - (B + C) by combining like terms. This means we need to rewrite the expression using the distributive property and then combine like terms.

Q: What is the final answer to the expression A^2 - (B + C)?

A: The final answer to the expression A^2 - (B + C) is 8x^2 - 25x + 7.

Q: Can you explain the step-by-step solution to the problem?

A: Here is the step-by-step solution:

Square the polynomial A: A^2 = (3x - 4)(3x - 4)
Expand the expression A^2: A^2 = 9x^2 - 24x + 16
Find the sum of B and C: B + C = (x + 7) + (x^2 + 2)
Combine like terms: B + C = x^2 + x + 9
Simplify the expression A^2 - (B + C): A^2 - (B + C) = (9x^2 - 24x + 16) - (x^2 + x + 9)
Rewrite the expression using the distributive property: A^2 - (B + C) = 9x^2 - 24x + 16 - x^2 - x - 9
Combine like terms: A^2 - (B + C) = 8x^2 - 25x + 7

Conclusion

In this Q&A session, we have discussed the problem of simplifying the expression A^2 - (B + C). We have explained the step-by-step solution to the problem and answered common questions that may arise.

Frequently Asked Questions

Q: What is the difference between A^2 and (B + C)?

A: A^2 is the square of the polynomial A, while (B + C) is the sum of the polynomials B and C.

Q: How do we simplify the expression A^2 - (B + C)?

A: We can simplify the expression A^2 - (B + C) by combining like terms.

Q: What is the final answer to the expression A^2 - (B + C)?

A: The final answer to the expression A^2 - (B + C) is 8x^2 - 25x + 7.

Additional Resources

For more information on simplifying expressions and solving polynomial equations, please refer to the following resources:

Final Answer

The final answer is 8x^2 - 25x + 7.