DHagan17 DHagan17

14-10-2016
Mathematics

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-x 2 y 2 + x 4 + 4y 2 - 4x 2

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14-10-2016

-x^2+y^2+x^4+4y^2-4x^2
group like terms
x^4-4x^2-x^2+y^2+4y^2
x⁴-5x²+5y²

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