document.write( "Question 157487: Factor completely by grouping.
\n" ); document.write( "-36x^2 + 4x^2 - 80x
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Algebra.Com's Answer #116056 by jim_thompson5910(35256)\"\" \"About 
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\"-36x%5E2+%2B+4x%5E2+-+80x\" Start with the given expression\r
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\n" ); document.write( "\n" ); document.write( "\"-32x%5E2+-+80x\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"-16x%282x%2B5%29\" Factor out the GCF \"-16x\"\r
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\n" ); document.write( "\n" ); document.write( "So \"-36x%5E2+%2B+4x%5E2+-+80x\" factors to \"-16x%282x%2B5%29\"
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