Question

Solve the equation
x^2+18x+81=25

Answer 1

the answer would be x=-4, -14

Answer 2

(x+9)(x+9)=25

Explanation:

x^2+18x+81=25

or x^2+(9x+9x)+81=25

or x^2+9x+9x+81=25

or x(x+9)+9(x+9)=25

:: (x+9) (x+9) =25