Question

Calcule as potências: A) (-5)³ B) 10^5 C) (2,5)² D) (-3,7)^0 E) (2/3)³

Answer 1

Resposta e explicação passo-a-passo:

A)

$(-5)*(-5)*(-5) = (-5)^{-3} \\(-5)^{-3} = -125$

B)

$(10)^{5} = 10*10*10*10*10\\(10)^{5} = 100000$

C)

$(2,5)^{2} = 2,5*2,5= 25*25*10^{-2} \\(2,5)^{2} = 625 *10^{-2}\\ (2,5)^{2} = 6,25$

D)

$(3,7)^{0} = 1$

E)

$(\frac{2}{3})^{3} = \frac{(2)^{3} }{(3)^{3} } = \frac{2*2*2}{3*3*3}\\( \frac{2}{3})^{3} = \frac{8}{27}$