Question

2 - Qual o valor da soma (1,6)2 + (1,2)2 +
(1,6)2 + (1,2)2 + (0,5)2?

Answer 1

Resposta:

 8, 25

Explicação passo a passo:

$(1,6)^{2}$ + $(1,2)^{2}$ + $(1,6)^{2}$+ $(1,2)^{2}$+ $(0,5)^{2}$ =

(1,6) . (1,6) + (1,2) . (1,2)  + $(1,6)^{2}$+ $(1,2)^{2}$+ $(0,5)^{2}$ =

2, 56 + 1, 44  + $(1,6)^{2}$+ $(1,2)^{2}$+ $(0,5)^{2}$ =

4 + (1,6) . (1,6) + (1,2) . (1,2) + $(0,5)^{2}$ =

4 + 2, 56 + 1, 44 + $(0,5)^{2}$ =

4 + 4 + (0,5) . (0,5) =

4  + 4 + 0, 25 =  8, 25