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Which of the following expressions is equivalent to \(-4x^3 - 12x^3 + 9x^2\)?

a. 0

b. 0x⁸

c. 0⁷x⁸

d. \(-16x^3 + 9x^2\)

Answer :

Final answer:

The equivalent expression for -4x³ - 12x³ + 9x² is option d. -16x³ + 9x², found by combining the like terms of -4x³ and -12x³.The correct option is d. -16x³ + 9x².

Explanation:

To find an equivalent expression for -4x³ - 12x³ + 9x², we combine like terms. The like terms here are -4x³ and -12x³ which both contain the variable x³. Combining these terms gives us:

-4x³ - 12x³ = -16x³

So, now our expression is simplified to -16x³ + 9x².

There is no further simplification needed because 9x² does not have a like term to combine with. Therefore, our final answer is -16x³ + 9x², which corresponds to option d.

The correct option is d. -16x³ + 9x².

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