document.write( "Question 267865: factor the polynomial by grouping
\n" ); document.write( "4x^3-4x^2-9x+9 \n" ); document.write( "
Algebra.Com's Answer #196581 by ankor@dixie-net.com(22740)\"\" \"About 
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factor the polynomial by grouping
\n" ); document.write( "4x^3 - 4x^2 - 9x + 9
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\n" ); document.write( "Factor out 4x^2
\n" ); document.write( "4x^2(x - 1) - 9x + 9
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\n" ); document.write( "Factor out 9
\n" ); document.write( "4x^2(x - 1) - 9(x - 1)
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\n" ); document.write( "Factor out (x-1)
\n" ); document.write( "(x - 1) (4x^2 - 9)
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\n" ); document.write( "Note that 4x^2 - 9 is the difference of squares
\n" ); document.write( "(x - 1) (2x - 3) (2x + 3) \n" ); document.write( "
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