Question

A) 7-²
B) (5/7)-²
C) (2/3)-⁴
D) 5-³
E) (2/5)-³
F) (6/3)-¹

Answer 1

Olá...

$a)7^{-2} = \frac{1}{7^2}=\frac{1}{49}\\\\b)(\frac{5}{7})^-^2=(\frac{7}{5})^2=\frac{49}{25}\\\\c)(\frac{2}{3})^-^4=(\frac{3}{2})^4=\frac{81}{16}\\\\d)5^{-2}=\frac{1}{5^3}=\frac{1}{125}\\\\e)(\frac{2}{5})^-^3=(\frac{5}{2})^3=\frac{125}{8}\\\\f)(\frac{6}{3})^-^1= (2)^{-2}=\frac{1}{2}$

Espero ter ajudado