document.write( "Question 284209: facotr completely\r
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Algebra.Com's Answer #206230 by oberobic(2304)\"\" \"About 
You can put this solution on YOUR website!
\"7x%5E2-21xy-28y%5E2+=+7%28x%5E2+-+3xy+-+4y%5E2%29+=+7%28x+-+4y%29%28x+%2B+y%29\" \n" ); document.write( "
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