Question

obtenha o valor de cada expressao abaixo

a) (2/5)-² +(1/3)-¹

b) (3/4)²-(4/3)-² ​

Answer 1

Resposta:

Explicação passo-a-passo:

a) (2/5)-² + (1/3)-¹

(5/2)^2 = 25/4

(1/3)^-1 = 3

25/4 + 3 = (25+12)/4 = 37/4 = 9,25

b) (3/4)²- (4/3)-² ​

(3/4)^2 = 9/16

(4/3)^-2 = (3/4)^2 = 9/16

9/16 - 9/16 = 0