Rich G. answered 03/13/19
Experienced Algebra Tutor at High School and College Level
Square both sides of the equation. This will give you:
x + 5 = (x-7)2
Expand the right side of the equation
x + 5 = x2 -14x + 49
Combine like terms
0 = x2 - 15x + 44
Solve for x by factoring or using the quadratic equation. You will get two possible answers for x