Question

Calcule
$\frac{4}{5} {}^{ - 2}$
$\frac{2}{3} {}^{ - 3}$
$\frac{1}{3} {}^{ - 2}$

Porfavor ajude em troca 25 pts!

Answer 1

(4/5)-² = (5/4)² = 25/16

(2/3)-³ = (3/2)³ = 27/8

(1/3)-² = (3/1)² = 9