document.write( "Question 155399: please help me solve this:\r
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Algebra.Com's Answer #114442 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
(x - 2y)(x + 2y)
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\n" ); document.write( "X^2-2XY+2XY-4Y^2=X^2-4Y^2 ANSWER.
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