SOLUTION: i need help to figure this out. Simplify m(2+n-m)+3(3n+m^2-1)

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Question 897073: i need help to figure this out.
Simplify
m(2+n-m)+3(3n+m^2-1)
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
m(2+n-m)+3(3n+m^2-1) =
2m + mn -m^2 + 9n +3m^2 -3 =
2m^2 +mn +2m +9n -3 =
2m(m +1) +n(m +9) -3