add (x^2+7xy-y^2)+(6x^2-9xy+18y^2)

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add (x^2+7xy-y^2)+(6x^2-9xy+18y^2)

Guest Jul 10, 2014

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Best Answer

+130517

+5

Combining like terms, we get

7x^2 - 2xy + 17y^2

CPhill Jul 10, 2014

1⁺⁰ Answers

+130517

+5

Best Answer

Combining like terms, we get

7x^2 - 2xy + 17y^2

CPhill Jul 10, 2014

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