Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real
numbers.
-$4 ^ { - 2 }$
A) $\frac { 1 } { 16 }$
B) $- 16$
C) $- 8$
D) $- \frac { 1 } { 16 }$

Question

Quizplus · Accepted Answer

The rule for negative exponents states that $a^{-n} = \frac{1}{a^n}$. Therefore, $4^{-2} = \frac{1}{4^2} = \frac{1}{16}$.

Write the Expression with Only Positive Exponents and Evaluate If 4−24 ^ { - 2 }4−2

Write the Expression with Only Positive Exponents and Evaluate If $4 ^ { - 2 }$