Question

Calculeee o valooooor de A, me ajudem ai galeraaaaaa
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Answer 1

$a = ( \frac{2}{3} {)}^{ - 2} ( \frac{?}{2} {)}^{ - 1}$

$a = ( \frac{3}{2} {)}^{2} (2)$

$a = \frac{9}{4} \times 2$

$a = \frac{9}{2}$