document.write( "Question 174060This question is from textbook
\n" ); document.write( ": factor x^-729
\n" ); document.write( "factor x^4+3x^2-28
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Algebra.Com's Answer #129062 by Alan3354(69443)\"\" \"About 
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factor x^-729
\n" ); document.write( "= (x-27*(x+27)
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\n" ); document.write( "factor x^4+3x^2-28
\n" ); document.write( "= (x^2 + 7)*(x^2 - 4)
\n" ); document.write( "= (x^2 + 7)*(x - 2)*(x + 2)\r
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