Question

Calcule as potências:

a) (+1/3)²=

b)(-1/5)²=

c)(+2/3)²=

d)(-3/7)²=

Answer 1

Boa noite Oxanena

a) (+1/3)² = 1/(3*3) = 1/9 

b)(-1/5)² = 1/(5*5) = 1/25

c)(+2/3)² = 2*2/3*3 = 4/9 

d)(-3/7)² = 3*3/7*7 = 9/49

Answer 2

Olá, boa noite ☺

Resoluções:

a)

(1/3)²=( 1/3²)=1/3 x 3 = 1/9

b)

(-1/5)²= (-1).(-1)/5²= 1/5 x 5 = 1/25

c)

(2/3)²= 2²/3²= 2 x 2/ 3 x 3= 4/9

d)

(-3/7)²=(-3).(-3)/7²= 9/ 7 x 7= 9/49

Bons estudos :)