Math

3r^2 -16r-7=5 Solve

Asked by AnneS2 on 15 May 05:22

Last updated by anonymous on 16 May 14:39

1 Answers

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Answered by CherieS on 16 May 14:39

3r^2 -16r-7=5

3r^2 -16r-7-5=5-5

3r^2 -16r-12=0

(r )(3r ) ( -6)( +2)=0

(r-6) (3 r+2) = 0

Solve:

(r-6)=0

r-6+6=0+6

r=6

Solve:

(3 r+2) = 0

3r+2-2=0-2

3r=-2

3r/3=-2/3

r=-2/3