Factor and check 1x^2 - 3x - 4 = 0

Asked by AnneS2 12 years ago 7/30/2013 8:33 AM

Last updated by anonymous 12 years ago 7/31/2013 3:10 PM

Answered by CherieS 12 years ago 7/31/2013 3:10 PM

1x^2 - 3x - 4 = 0

(x )(x ) ( -4)( +1)=0

(x-4) (x+1) = 0

Check:

(x-4) (x+1) = 0

(x)(x) (x)(1) (-4)(x) (-4)(1)=0

x^2 +x -4x -4=0

x^2 -3x -4=0