document.write( "Question 76778: how do you solve x^4 - 4*y^4 ? \n" ); document.write( "

Algebra.Com's Answer #55038 by Nate(3500) $\"\"$ $\"About$

You can put this solution on YOUR website!
(x^2)^2 - (2y^2)^2 look familiar? like p^2 - i^2
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