document.write( "Question 632863: Proove: (x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2 \n" ); document.write( "
Algebra.Com's Answer #398621 by richard1234(7193)\"\" \"About 
You can put this solution on YOUR website!
Expand both sides first. \n" ); document.write( "
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