document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1182006>Question 1182006</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Keller performed the work below to express the polynomial in factored form:	<BR>\n" );
document.write( "r(x) = x4  -  8x2  -  9 	<BR>\n" );
document.write( "r(x) = (x2 + 1)(x2  -  9) <BR>\n" );
document.write( "(x) = (x + 1)(x  -  1)(x + 3)(x  -  3)<BR>\n" );
document.write( "Explain the error he made and complete the factorization correctly.	 </SPAN>\n" );
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document.write( "to express the polynomial in factored form:<BR>\n" );
document.write( "r(x) = x4 - 8x2 - 9<BR>\n" );
document.write( "r(x) = (x2 + 1)(x2 - 9)<BR>\n" );
document.write( "(x) = (x + 1)(x - 1)(x + 3)(x - 3)<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4-8x%5E2-9 ALIGN=MIDDLE  ALT=\"x%5E4-8x%5E2-9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "-9 and +1 ?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2-9%29%28x%5E2%2B1%29 ALIGN=MIDDLE  ALT=\"%28x%5E2-9%29%28x%5E2%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Recognize the Difference Of Squares.  That is the factor containing the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-9 ALIGN=MIDDLE  ALT=\"-9\"   DISABLED_style= \"max-width:90%; height:auto;\" >; not the other factor.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-3%29%28x%2B3%29%28x%5E2%2B1%29 ALIGN=MIDDLE  ALT=\"%28x-3%29%28x%2B3%29%28x%5E2%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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