SOLUTION: add (6x^2-xy+y^2)+(-x^2-4xy+8y^2) Thank you

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Question 324031: add
(6x^2-xy+y^2)+(-x^2-4xy+8y^2)
Thank you

Answer by maciaemi(11)   (Show Source): You can put this solution on YOUR website!
5x^2 - 5xy + 9y^2
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