Question

(-4/5)² : [2⁻⁴ . (1+3/5) + 0,7] = conta

pode dar 2/25, 12/25 ou 4/5

Answer 1

Resposta:

4/5

Explicação passo-a-passo:

(-4/5)² : [2^-4 . (1 + 3/5) + 0,7] =

16/25 : [(1/2)^4 . ( 5/5 + 3/5 ) + 7/10] =

16/25 : [ 1/16 . (8/5) + 7/10 ] =

16/25 : [8/80 + 7/10] =

16/25 : [8/80 + 56/80] =

16/25 : [ 64/80] =

16/25 : [ 8/10] =

16/25 : 8/10 =

16/25 x 10/8 = 160/200 simplificando por 40 = 4/5