Question

simplifique as expressões:
a) (5²)³ : (5⁴)²=

Answer 1

$(5^{2})^{3} \ :\ (5^{4})^{2}\ =\ 5^{2.3}\ :\ 5^{4.2}\ =\ 5^{6}\ :\ 5^{8}\ =\ 5^{6-8}\ =\boxed{\boxed{5^{-2}}}\ \ ok$

Answer 2

Vamos lá :

(5²)³ : (5⁴)² = 5⁶ : 5⁸ = 5⁶.5⁻⁸ = 5⁽⁶⁻⁸⁾ = 5⁻²

Espero ter ajudado !!!