Question

please answer this question

Answer 1

Answer:

(a+b+c)^2 = a^2 + b^2 + c^2 + 2ab + 2bc + 2ac

(8)^2 = a^2 + b^2 +c^2 + 2(19)

64 = a^2 + b^2 + c^2 +38

a^2 + b^2 + c^2 = 64\38

= 32\19

i tried it I think this is the answer