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Select the correct answer.

What is the simplest form of this expression?
[tex]\[
-x\left(4 x^2-6 x+1\right)
\][/tex]

A. [tex]\(-4 x^3 - 6 x^2 - x\)[/tex]

B. [tex]\(-4 x^3 + 6 x^2 - x\)[/tex]

C. [tex]\(-4 x^3 - 6 x + 1\)[/tex]

D. [tex]\(-4 x^3 + 5 x\)[/tex]


Sagot :

To simplify the expression [tex]\(-x(4x^2 - 6x + 1)\)[/tex], we need to distribute the [tex]\(-x\)[/tex] across each term within the parenthesis. Here are the steps to do that:

1. Multiply [tex]\(-x\)[/tex] with the first term [tex]\(4x^2\)[/tex]:
[tex]\[ -x \cdot 4x^2 = -4x^3 \][/tex]

2. Multiply [tex]\(-x\)[/tex] with the second term [tex]\(-6x\)[/tex]:
[tex]\[ -x \cdot -6x = 6x^2 \][/tex]

3. Multiply [tex]\(-x\)[/tex] with the third term [tex]\(1\)[/tex]:
[tex]\[ -x \cdot 1 = -x \][/tex]

Now, combine the results of these multiplications:

[tex]\[ -4x^3 + 6x^2 - x \][/tex]

Therefore, the simplest form of the given expression is:

[tex]\[ -4x^3 + 6x^2 - x \][/tex]

We then look at the given options to determine which one matches our simplified expression:

A. [tex]\(-4x^3 - 6x^2 - x\)[/tex]

B. [tex]\(-4x^3 + 6x^2 - x\)[/tex]

C. [tex]\(-4x^3 - 6x + 1\)[/tex]

D. [tex]\(-4x^3 + 5x\)[/tex]

It is clear that option B matches our simplified expression [tex]\(-4x^3 + 6x^2 - x\)[/tex]. Therefore, the correct answer is:

B. [tex]\(-4x^3 + 6x^2 - x\)[/tex]