Question

21. Calcule o valor de:

a) 3-²

b) (2/7)-¹

c) 10-⁵

d) (-5/2)-²​

Answer 1

Resposta:

Explicação passo a passo:

3^-2=

(1/3)^2=

1/9

(2/7)^-1=

7/2

10^-5=

(1/10)^5=

1/100000

(-5/2)^-2=

(-2/5)^2=

+4/25