z^2 -14z+40=0 Factor and solve

Asked by AnneS2 12 years ago 10/24/2013 6:53 AM

Last updated by anonymous 12 years ago 10/25/2013 11:48 AM

Answered by CherieS 12 years ago 10/25/2013 11:48 AM

z^2 -14z+40=0

(z )(z ) ( -10)( -4)=0

(z-10) (z-4) = 0

Solve:

(z-10) =0

z-10+10 =0+10

z=10

Solve:

(z-4) = 0

z-4+4 = 0+4

z=4