Question

Pfv, me ajuda. Eu vou rodar cara. PFV

Answer 1

Resposta:

a)

$(\frac{1}{3})^{-2}+(\frac{2}{5})^{-1} :\sqrt{\frac{9}{4} } - (-1)^2 =(3)^2 + (\frac{5}{2})^1 :\frac{3}{2} -1 = 9+\frac{5}{2}:\frac{3}{2} -1\\\\ = 9 + \frac{5}{2}\cdot\frac{2}{3}-1 =9+\frac{5}{3} -1 = 8+\frac{5}{3} = \frac{24}{3} +\frac{5}{3} =\frac{29}{3}$

b)

$3^{-2}\cdot3^{-5}:3^{-1} =3^{-2+(-5)-(-1)} =3^{-2-5+1} =3^{-7+1} = 3^{-6} = \frac{1}{3^6}$

Explicação passo a passo: