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What is the product?

[tex]
(4x)\left(-3x^8\right)\left(-7x^3\right)
[/tex]

A. [tex]-84x^{12}[/tex]
B. [tex]-84x^{24}[/tex]
C. [tex]84x^{12}[/tex]
D. [tex]84x^{24}[/tex]

Answer :

Sure, let's break it down step-by-step!

We need to find the product of the expression [tex]\((4x)(-3x^8)(-7x^3)\)[/tex].

1. Multiply the coefficients: The coefficients in the expression are [tex]\(4\)[/tex], [tex]\(-3\)[/tex], and [tex]\(-7\)[/tex]. Let's multiply them together:
[tex]\[
4 \times (-3) \times (-7) = 84
\][/tex]
When you multiply [tex]\(-3\)[/tex] by [tex]\(-7\)[/tex], it becomes a positive number because the product of two negative numbers is positive. Then, multiplying by 4 gives 84.

2. Add the exponents of [tex]\(x\)[/tex]: In the expression, we have [tex]\(x^1\)[/tex], [tex]\(x^8\)[/tex], and [tex]\(x^3\)[/tex]. To find the product of terms with the same base, you add the exponents (since they are being multiplied):
[tex]\[
1 + 8 + 3 = 12
\][/tex]
So, the exponent for [tex]\(x\)[/tex] in the final expression will be [tex]\(x^{12}\)[/tex].

3. Combine both parts: Now, combine the coefficient and the result from the exponents:
[tex]\[
84x^{12}
\][/tex]

Thus, the product of the expression [tex]\((4x)(-3x^8)(-7x^3)\)[/tex] is [tex]\(84x^{12}\)[/tex].

So, the correct answer is: [tex]\(84x^{12}\)[/tex].

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