Math

Factor and solve: z^2 -13z+42=0

Asked by AnneS2 on 20 Sep 05:56

Last updated by anonymous on 21 Sep 11:05

1 Answers

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Answered by CherieS on 21 Sep 11:05

z^2 -13z+42=0

(z )(z ) ( -7)( -6)=0

(z-7) (z-6) = 0

Solve:

(z-7) =0

z-7+7 =0+7

z=7

Solve:

(z-6) = 0

z-6+6 = 0+6

z=6