document.write( "Question 840524: How do I graph x^2+2xy+y^2=1?
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Algebra.Com's Answer #506201 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E2%2B2xy%2By%5E2=1\"$
\n" ); document.write( " $\"%28x%2By%29%5E2=1\"$
\n" ); document.write( " $\"x%2By=0+%2B-+1\"$
\n" ); document.write( " $\"y=1-x\"$ and $\"y=-1-x\"$
\n" ); document.write( "These are parallel lines.
\n" ); document.write( " $\"graph%28300%2C300%2C-5%2C5%2C-5%2C5%2C1-x%2C-1-x%29\"$
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