Question

gente quanto é
a) (-0,7)³
b)(⅖)³
c)(-4/3)³
​

Answer 1

Resposta:

$a)~~(-0,7)^3=(-0,7).(-0,7).(-0,7)=-0,343\\ \\ b)~~({2\over5})^3=({2\over5}).({2\over5}).({2\over5})={8\over125}\\ \\c)~~(-{4\over3})^3=(-{4\over3}).(-{4\over3}).(-{4\over3})={-{64\over27}$