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December 21, 2014

Homework Help: PreCalc

Posted by Jill on Monday, February 26, 2007 at 9:30pm.

Someone please help me solve this equation for y. (x^2)(y^2)+xy=1 I need to solve for y so that i can graph it!

y^2 + y/x - 1/x^2 = 0
Treat 1/x as b and -1/x^2 as c in the quadratic equation ax^2 + bx + c = 0
There are two solutions
y = [-1/x + sqrt(1/x^2 + 4/x^2)]/2
and
y = [-1/x - sqrt(1/x^2 + 4/x^2)]/2

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