Math

Factor and check: z^2 -20z+64=0

Asked by AnneS2 on 12 Sep 03:22

Last updated by anonymous on 13 Sep 15:14

1 Answers

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Answered by CherieS on 13 Sep 15:14

z^2 -20z+64=0

(z )(z ) ( -16)( -4)=0

(z-16) (z-4) = 0

Check:

(z-16) (z-4) = 0

(z)(z) (z)(-4) (-16)(z) (-16)(-4)=0

z^2 -4z -16z +64=0

z^2 -20z +64=0