Math

6n^2 -18n-18=6 Solve

Asked by AnneS2 on 15 May 05:20

Last updated by anonymous on 16 May 14:54

1 Answers

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Answered by CherieS on 16 May 14:54

6n^2 -18n-18=6

6n^2 -18n-18-6=6-6

6n^2 -18n-24=0

6(n^2-3n-4)=0

6(n )(n ) ( -4)( +1)=0

6 (n-4) (n+1) = 0

Solve:

6 (n-4)=0

6(n) (6)(-4)=0

6n-24=0

6n-24+24=0+24

6n=24

6n/6=24/6

n=4

Solve:

6(n+1) = 0

(6)(n) (6)(+1)=0

6n+6=0

6n+6-6=0-6

6n=-6

6n/6=-6/6

n=-1