SOLUTION: how would you solve this problem? {{{(5n^2-2ny+3y^2)-(9n^2-8ny-10y^2)}}}

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Question 23627: how would you solve this problem?
%285n%5E2-2ny%2B3y%5E2%29-%289n%5E2-8ny-10y%5E2%29
Answer by rapaljer(4667) About Me  (Show Source):
You can put this solution on YOUR website!
%285n%5E2-2ny%2B3y%5E2%29-%289n%5E2-8ny-10y%5E2%29

Remove the parentheses, multiplying the last quantity by -1:
5n%5E2+-2ny+%2B3y%5E2+-+9n%5E2+%2B+8ny+%2B+10y%5E2

Combine like terms:
-4n%5E2+%2B6ny+%2B+13y%5E2

R^2 at SCC