Determine the solutions of the quadratic equation
 by factorization.

The correct answer is:

x² +7x - 8 =0
x² +8x - x - 8 =0
x(x+8) - 1(x+8) =0
(x+8)(x-1) =0
Equating both the factors with 0, we get
x+8 = 0
x = -8
And,
x-1 = 0
x =1