Math x^2 - 4x - 77 = 0 Factor and check Asked by AnneS2 on 02 Nov 07:31 Last updated by anonymous on 03 Nov 13:29

x^2 - 4x - 77 = 0 (x )(x ) ( -11)( +7)=0 (x-11) (x+7) = 0 Check: (x-11) (x+7) = 0 (x)(x) (x)(7) (-11)(x) (-11)(7)=0 x^2 +7x -11x -77=0 x^2 -4x -77=0