Question 148962
x^2+6x-7=0
Factor:
start with
(x)(x)

insert a + and a -
(x+)(x-)


Find two factors of 7 whose difference is 6: 7 and 1. insert them:
(x+7)(x-1)


Set each expression equal to zero
x+7=0
x-1=0

Solve for x in each
x=-7
x=1