Question

{(1/5)^-2-(1/2)^-3}÷(1/4)^-2​

Answer 1

Answer:

$( \frac{1}{5} ) {}^{ - 2} - (\frac{1}{2} ) {}^{ - 3} \div ( \frac{1}{4} ) {}^{ - 2} \\ \\ \\ = > \frac{1}{ (\frac{1}{5}) {}^{2} } - \frac{1}{ (\frac{1}{2}) {}^{3} } \div \frac{1}{ (\frac{1}{4} ) {}^{2} } \\ \\ \\ = > 25 - \frac{8}{16} \\ \\ \\ = > 25 - \frac{1}{2} \\ \\ \\ = > \frac{50 - 1}{2} \\ \\ \\ = > \frac{49}{2}$

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