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#1

$Old$ 11-19-2008, 07:32 PM

jvignacio $jvignacio is offline$

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$Default$ algebra help!

$\frac{(x+y)^2}{x^2}-\frac{(x-y)^2}{y^2}$

$\frac {y^2(x+y)^2-x^2(x-y)^2}{x^2y^2}$

$\frac{y^2(x^2+2xy+y)-x^2(x^2-2xy+y^2)}{x^2y^2}$

$\frac{y^2x^2+2xy^3+y^3-x^4+2x^3y-y^2x^2}{x^2y^2}$

$\frac{2xy^3+y^3-x^4+2x^3y}{x^2y^2}$

is that correct? cheers

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$Old$ 11-19-2008, 08:14 PM

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Remember that $a^2-b^2,$ that'd make your algebra a bit nicer.

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#3

$Old$ 11-19-2008, 10:28 PM

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Originally Posted by Krizalid $View Post$

Remember that $a^2-b^2,$ that'd make your algebra a bit nicer.

im not sure what you mean. so is my answer wrong?

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