Question

help guys plzzzz any one

Answer 1

this is the answer for the first part

Answer 2

x^2 - 7x - 8 =0
x^2 - 8x - x -8=0
x(x-8) 1(x-8)
(x+1) (x-8)

when,
x+1=0. and. x-8=0
x= -1. and. x= 8