Question

$( + \frac{3}{4}) { - }^{3}$
​

Answer 1

Olá,

$\sf \: ( \frac{3}{4} {)}^{ - 3} = ( \frac{4}{3} {)}^{3} = \frac{ {4}^{3} }{ {3}^{3} } = \frac{4. \: 4. \: 4}{3. \: 3. \: 3} = \frac{64}{27}$