Math

5r^2 -44r+120=-30+11r Solve

Asked by AnneS2 on 15 May 05:26

Last updated by anonymous on 16 May 14:04

1 Answers

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Answered by CherieS on 16 May 14:04

5r^2 -44r+120=-30+11r

5r^2 -44r+120+30=-30+11r +30

5r^2 -44r+150=11r

5r^2 -44r+150-11r=11r-11r

5r^2 -55r+150=0

5(r^2-11r+30)=0

5 (r )(r ) ( -6)( -5)

5 (r-6) (r-5) = 0

Solve:

5 (r-6)=0

5(r) (5)(-6)=0

5r-30=0

5r-30=30=0+30

5r=30

5r/5=30/5

r=6

Solve:

5(r-5) = 0

5(r) (5)(-5)=0

5r-25=0

5r-25+25=0+25

5r=25

5r/5=25/5

r=5