Question

expressões numericas

a) (2/5)^-2+(1/3)^-1
b) (3/4)^2-(4/3)^-2​

Answer 1

Resposta:

Bom dia

Explicação passo-a-passo:

a)

$( \frac{2}{5}) ^{-2}+( \frac{1}{3}) ^{-1}=\\\\( \frac{5}{2}) ^{2}+( \frac{3}{1}) ^{1}=\\\\\frac{25}{4}+3=\frac{37}{4}$