Factor the following..

Question

x^2 +16x -144=0

Answer 1

x^2+16x-144=0

x^2+16x=144

x^2+16x+8^2=144+8^2

x^2+16x+8^2=(x+8)^2

(x+8)^2=144+64

(x+8)^2=208

(x+8)*(x+8)=208