Question

The roots of X2 - 7X - 8 = 0 Are:

Answer 1

x2-7x-8
x2-x+8x-8
x(x-1)+8(x-1)
(x+8)(x-1)
x=1;-8
hence the roots are 1 and -8

hope this helps!
cheers!!

Answer 2

(x + 8) (x - 1)
x = - 8, x = 1