SOLUTION: subtract the polynomials. (-8r^2+7r+2)-(9r^2+2) simplify answer. please help....

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: subtract the polynomials. (-8r^2+7r+2)-(9r^2+2) simplify answer. please help....      Log On


   

Question 264539: subtract the polynomials.
(-8r^2+7r+2)-(9r^2+2)
simplify answer.
please help....
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%28-8r%5E2%2B7r%2B2%29-%289r%5E2%2B2%29 Start with the given expression.


-8r%5E2%2B7r%2B2-9r%5E2-2 Distribute


%28-8r%5E2-9r%5E2%29%2B7r%2B%282-2%29 Group like terms.


-17r%5E2%2B7r Combine like terms.


So %28-8r%5E2%2B7r%2B2%29-%289r%5E2%2B2%29=-17r%5E2%2B7r