Question

Resposta das potenciações:

1) (+5)² . (+5)³=
2) (-21)³ : (-21)¹=
3) (+15/21) -² =
4) [(-21) ²]³ =

Answer 1

1) 5² . 5³ = 5⁵
2) (-21)³ : (-21)¹ = (-21)²
3) $(\frac{15}{21})^{-2} = (\frac{21}{15})^{2}$
4) ((-21)²)³ = (-21) ² * ³ = (-21)⁶