Question

Determine o valor das potências:
a) 8³=

b) (-15)³=

c) 12-³=

d) 5)²=
9)

e) 10-⁴=

Answer 1

Determine o valor das potências: 
a) $8^{3}$ = 8 x 8 x 8 = 512 

b)$(-15)^{3}$ = (-15 x -15 x -15) = - 3375 

c)$12^{-3}=</span><span>(12x12x12)^{-1} = 1728^{-1} = \dfrac {1}{1728}$

d)$(\dfrac{5}{9})^{2} = \dfrac{5}{9} x \dfrac{5}{9} = \dfrac{25}{81}$

e) $10^{-4} = (10 x 10 x 10 x 10)^{-1} = 10000^{-1} = \dfrac {1}{10000}$

Answer 2

a)8​3​​ = 8 x 8 x 8 = 512 

$b) (-15)^{3}$ = (-15 x -15 x -15) = - 3375 

$c)12^{3}$ = 12 x 12 x 12 = 1728

d)(59)2=59x59=2581d) (\dfrac{5}{9})^{2} = \dfrac{5}{9} x \dfrac{5}{9} = \dfrac{25}{81}d)(​9​​5​​)​2​​=​9​​5​​x​9​​5​​=​81​​25​​