Question

me ajudem por favor !!

Answer 1

Resposta:

$a) {( \frac{2}{3} )}^{ - 2} - {4}^{ \frac{1}{2} } = {( \frac{3}{2} )}^{2} - \sqrt{4} =$

$= \frac{9}{4} - 2 = \frac{9}{4} - \frac{8}{4} = \frac{1}{4}$

$b) {1000}^{ \frac{1}{3} } + ( \frac{1}{9} )^{ - 2} = \sqrt[3]{1000} + {9}^{2} =$

$= 10 + 81 = 91$

$c) {( \frac{8}{125}) }^{ - \frac{1}{3} } - {( \frac{25}{4}) }^{ \frac{1}{2} } = ( \frac{125}{8} ) ^{ \frac{1}{3} } - {( \frac{25}{4}) }^{ \frac{1}{2} } =$

$\sqrt[3]{ \frac{125}{8} } - \sqrt{ \frac{25}{4} } = \frac{5}{2} - \frac{5}{2} = \frac{0}{2} = 0$

Espero ter ajudado.

Bons estudos.