Question

Solve (x + 4)2 - 3(x + 4) – 3 = 0 using substitution.

Select the solution(s) of the original equation.

Answer 1

(x+4) x 2-3(x+4)-3=0
2x+8-3(x+4)-3=0
2x+8-3x-12-3=0
-x -7=0
-x=7
x=7