PLEASE HELP ME ASAP

Question

Find three consecutive positive even integers such that the sum of the squares is 776

Answer 1

(x-2)^2 + x^2 + (x+2)^2 = 776

x^2 -4x + 4 + x^2 + x^2 + 4x + 4 = 776

3x^2 = 776 -8 = 768

x^2 = 768/3 = 256

x = sqr256 = 16

x-2 = 14

x+2 = 18

the cosecutive even integers are 14, 16 and 18