document.write( "Question 1047201: X^2-Y^2+4X-4Y \n" ); document.write( "
Algebra.Com's Answer #662716 by stanbon(75887)\"\" \"About 
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X^2-Y^2+4X-4Y
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\n" ); document.write( "= (x-y)(x+y)+4(x-y)
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\n" ); document.write( "= (x-y)(x+y+4)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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