Advanced Math practice question

Answer: A. 1/x³

A negative exponent means the reciprocal of the positive power: x⁻³ = 1/x³. The sign in the exponent moves the power to the denominator; it doesn't make the value negative.

Why the other answers are wrong

B. −x³

−x³ is the negative of x cubed. A negative EXPONENT doesn't negate the value; it takes the reciprocal.

C. −3x

−3x multiplies x by −3. The exponent −3 is a power, not a coefficient.

D. 1/(3x)

1/(3x) has 3 as a multiplier in the denominator. The 3 is an exponent: x is cubed, then flipped.

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