Question
The value of $\frac{1}{4^{-2}}$ is equal to $16.$
✓
Answer
Using law of exponents, $\text{a}^{-\text{m}}=\frac{1}{\text{a}^{\text{m}}}$ [$\because$ a is non-zero integer] $\therefore \frac{1}{4^{-2}}=4^2$
$=4\times4=16$
$=4\times4=16$
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