document.write( "Question 1181911: The equation below comes from a formula that Euclid discovered while studying right triangles.
\n" ); document.write( "(x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2
\n" ); document.write( "Prove that the equation is true.(hint: try using a difference of squares) \n" ); document.write( "
Algebra.Com's Answer #811863 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Prove that the equation is true.(hint: try using a difference of squares)\r
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\n" ); document.write( "\n" ); document.write( "\"%282xy%29%5E2=x%5E4+%2B+2+x%5E2+y%5E2+%2B+y%5E4-%28x%5E4+-+2+x%5E2+y%5E2+%2B+y%5E4%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%282xy%29%5E2=x%5E4+%2B+2x%5E2+%2Ay%5E2+%2B+y%5E4-x%5E4+%2B+2x%5E2%2Ay%5E2+-+y%5E4\"\r
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