Question

(x+8)^2=25

Answer 1

(x+8)(x+8)=25
x^2+8x+8x+64=25
x^2+16x+39=0
x^2+3x+13x+39=0
x(x+3) 13 (x+3)=0
(x+13)(x+3)=0
x=-13 or -3

Answer 2

(x+8)^2=25
implies x+8 = +-5

if x+8 = 5 then x = -3
if x+8 = -5 then x = -13