Factor and check x^2 + 4x - 5 = 0

Asked by AnneS2 12 years ago 8/4/2013 8:02 AM

Last updated by anonymous 12 years ago 8/5/2013 2:32 PM

Answered by CherieS 12 years ago 8/5/2013 2:32 PM

x^2 + 4x - 5 = 0

(x )(x ) ( -1)( +5)=0

(x-1) (x+5) = 0

Check:

(x-1) (x+5) = 0

(x)(x) (x)(5) (-1)(x) (-1)(5)

x^2 +5x -1x -5

x^2 +4x -5=0