SOLUTION: add (2x^2-5xy+y^2)+(-9x^2-4xy-y^2)+(x^2+xy-8y^2)

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Question 519405: add
(2x^2-5xy+y^2)+(-9x^2-4xy-y^2)+(x^2+xy-8y^2)
Answer by algebrahouse.com(1659) About Me  (Show Source):
You can put this solution on YOUR website!
(2x^2-5xy+y^2)+(-9x^2-4xy-y^2)+(x^2+xy-8y^2)
= 2x^2 - 5xy + y^2 - 9x^2 - 4xy - y^2 + x^2 + xy - 8y^2 {took out parentheses}
= -6x^2 - 8xy - 8y^2 {combined like terms}

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