Question

resolva as expressões
por favor me ajude.​

Answer 1

Resposta:

$a) \frac{2}{3}+2\left(\frac{3}{2}\right)^2-\left(\frac{-4}{3}\right)^2=\frac{61}{18}\quad \left(\mathrm{Decimal:\quad }\:3.38888\dots \right)$

$b) \frac{\frac{\frac{2}{3}}{3}}{5}+\frac{5}{4}-2=-\frac{127}{180}\quad \left(\mathrm{Decimal:\quad }\:-0.70555\dots \right)$

$c) \left(-\frac{2}{3}\right)^2+\frac{\frac{\frac{2}{7}}{-4}}{7}-3\left(\frac{7}{5}\right)+\frac{5}{4}=-\frac{22189}{8820}\quad \left(\mathrm{Decimal:\quad }\:-2.51575\dots \right)$

Explicação passo-a-passo abaixo: