Question

resolva esta situação: (½)² + (-⅔)³​

Answer 1

(½)² + (-⅔)³

1/4 + (-8/27)

1/4 - 8/27========> *(108/108)

27 - 32 /108

-5/108 ✓

Answer 2

Resposta: -0,0462962962962962...

Explicação passo-a-passo:

Basta aplicar propriedades de potências.

$\mathtt{\left(\dfrac{1}{2}\right)^2+\left(\dfrac{-2}{3}\right)^3=\dfrac{1^2}{2^2}+\dfrac{(-2)^3}{3^3}=\dfrac{1}{4}+\dfrac{-8}{27}}\\\\\\ \mathtt{\dfrac{1}{4}+\dfrac{-8}{27}=\dfrac{27\times1+4\times(-8)}{4\times27}=\dfrac{27-32}{108}=\dfrac{-5}{108}}\\\\\\ \mathtt{\dfrac{-5}{108}=-0,0462962962962...=-0,0462\overline{962}}$