Question

3. Calcule a expressão
$( \frac{1}{2} ) ^{ - 3} + ( \frac{1}{2} )^{ - 5}$
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Answer 1

$\left(\frac{1}{2}\right)^{-3}+\left(\frac{1}{2}\right)^{-5}\\\\=2^3+2^5\\\\2^3=8\\\\=8+2^5\\\\2^5=32\\\\=8+32\\\\8+32=40\\\\=40$