Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real
numbers.
-$- x ^ { - 4 }$
A) $- 4 x$
B) $- \frac { 1 } { x ^ { 4 } }$
C) $4 \mathrm { x }$
D) $\frac { 1 } { x ^ { 4 } }$

Question

Quizplus · Accepted Answer

To eliminate the negative exponent, you rewrite the expression as the reciprocal of the base raised to the positive exponent. Thus, $-x^{-4}$ becomes $-\frac{1}{x^4}$.

Write the Expression with Only Positive Exponents and Evaluate If −x−4- x ^ { - 4 }−x−4

Write the Expression with Only Positive Exponents and Evaluate If $- x ^ { - 4 }$