document.write( "Question 446368: factor the expression completely:
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\n" ); document.write( "please help me as as u cannnnnnnnnnnnnnnnn\r
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Algebra.Com's Answer #307386 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
Think \"difference of squares\"...
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\n" ); document.write( "x^4-9x^2
\n" ); document.write( "x^2(x^2-9)
\n" ); document.write( "can be rewritten as:
\n" ); document.write( "x^2(x^2-3^2)
\n" ); document.write( "x^2(x-3)(x+3)\r
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