Question

Por favor me ajudem! (De preferencia com conta)

(-3/4)ˆ-3

(-2/5)ˆ-4

(2/3)ˆ3

Answer 1

Resposta: Olá ! a) ( -3/4)^-3 = 4^3/(-3)^3

64/-27

b) (-2/3) ^-4 = 3^4/ (-2)4

81/16

c) (2/3)^3 = 2^3/3^3

8/27

Espero ter ajudado.

Explicação passo-a-passo:

Answer 2

Olá, boa noite ☺

Resoluções:

1)

$\left (-\dfrac{3}{4} \right )^{-3}\\\\\left (-\dfrac{4}{3} \right )^3\\\\ =\left (-\dfrac{64}{27} \right )$

2)

$\left (-\dfrac{2}{5} \right )^{-4}\\\\\left (-\dfrac{5}{2}\right )^4\\\\=\left (\dfrac{625}{16} \right )$

3)

$\left (\dfrac{2}{3}\right )^3\\\\\left (\dfrac{2\cdot 2 \cdot 2}{3 \cdot 3 \cdot 3}\right )\\\\=\dfrac{8}{27}$

Bons Estudos :)