Question
$\Big(\frac{1}{2}\Big)^{-2}\div\Big(\frac{1}{2}\Big)^{-3}$
✓
Answer
$\Big(\frac{1}{2}\Big)^{-2}\div\Big(\frac{1}{2}\Big)^{-3}$
$=\Big(\frac{1}{2}\Big)^{-2+3}$ $=\frac{1}{2}$
$\left[\because a^m \div a^n=(a)^{m-n}\right]$
$=\Big(\frac{1}{2}\Big)^{-2+3}$ $=\frac{1}{2}$
$\left[\because a^m \div a^n=(a)^{m-n}\right]$
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