SOLUTION: Add or Subtract as indicated: These are confusing to me. Please help! (7x^2y-4xy+9xy^2)-(8x^2y+8xy+8xy^2)

Algebra ->  Algebra  -> Distributive-associative-commutative-properties -> SOLUTION: Add or Subtract as indicated: These are confusing to me. Please help! (7x^2y-4xy+9xy^2)-(8x^2y+8xy+8xy^2)      Log On

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Question 70713: Add or Subtract as indicated: These are confusing to me. Please help!
(7x^2y-4xy+9xy^2)-(8x^2y+8xy+8xy^2)
Answer by tutorcecilia(2144) About Me  (Show Source):
You can put this solution on YOUR website!
%28%287x%5E2y-4xy%2B9xy%5E2%29-%288x%5E2y%2B8xy%2B8xy%5E2%29%29
[Start by trying to combine like-terms within the parenthesis)
.
%287x%5E2y-4xy%2B9xy%5E2-8x%5E2y-8xy-8xy%5E2%29
[There are not any like-terms so eliminate the parenthesis. Multiply-through by the negative sign]
.
%287x%5E2y-8x%5E2y-4xy-8xy%2B9xy%5E2-8xy%5E2%29
[Again, try to combine like-terms]
.
%28-1x%5E2y-12xy%2B1xy%5E2%29
%28-x%5E2y-12xy%2Bxy%5E2%29 [All like-terms have been combined]