Question

(x+1)^2 = 25

Answer 1

(x+1)(x+1)=25
x^2+x+x+1=25
x^2+2x+1=25
x^2+2x=24 ? OR
x(x+2)=24 ?

x=0 or x=-2 . Are you trying to find the roots?

Answer 2

Easier might be to just take the square root of both sides; followed by subtracting 1.

Answer 3

(x+1)^2=25
x+1 = +/- 5
x = 4 or -6