High School

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Select the correct answer.

Simplify the expression [tex]-4x^2(3x-7)[/tex].

A. [tex]-12x^3 - 28x^2[/tex]
B. [tex]-12x^3 - 28[/tex]
C. [tex]-12x^3 + 28[/tex]
D. [tex]-12x^3 + 28x^2[/tex]

Answer :

To simplify the expression [tex]\(-4x^2(3x - 7)\)[/tex], you can use the distributive property. Here are the steps:

1. Distribute [tex]\(-4x^2\)[/tex] to both terms inside the parentheses:
[tex]\[
-4 x^2(3x) + (-4 x^2)(-7)
\][/tex]

2. Multiply [tex]\(-4x^2\)[/tex] by each term:

- For the first term:
[tex]\[
-4x^2 \times 3x = -12x^3
\][/tex]

- For the second term:
[tex]\[
-4x^2 \times -7 = 28x^2
\][/tex]

3. Combine the results:
[tex]\[
-12x^3 + 28x^2
\][/tex]

So, the simplified expression is:
[tex]\[
-12x^3 + 28x^2
\][/tex]

The correct answer is:
D. [tex]\(-12x^3 + 28x^2\)[/tex]

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