document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1183025>Question 1183025</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Students are trying to factor quadratic expressions using the guess-and-check method.  Find the mistake in each student's work.  Then give the correct answer.<BR>\n" );
document.write( "a)  𝑥(small 2)―𝑥―72=(𝑥―8)(𝑥+9)  \r<BR>\n" );
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document.write( "b)  3𝑥(small 2)―19𝑥+28=(3𝑥―4)(𝑥―7) \r<BR>\n" );
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document.write( "c)  6𝑥(small 2)+25𝑥+4=(2𝑥+1)(3𝑥+4) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #813169 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=813169\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "a) \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-x+-72=%28x-8%29%28x%2B9%29 ALIGN=MIDDLE  ALT=\"x%5E2-x+-72=%28x-8%29%28x%2B9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-8%29%28x%2B9%29 ALIGN=MIDDLE  ALT=\"%28x-8%29%28x%2B9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >....multiply<BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2Ax%2B9x-8x-8%289%29 ALIGN=MIDDLE  ALT=\"x%2Ax%2B9x-8x-8%289%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2Bx-72 ALIGN=MIDDLE  ALT=\"x%5E2%2Bx-72\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "mistake was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-x ALIGN=MIDDLE  ALT=\"-x\"   DISABLED_style= \"max-width:90%; height:auto;\" >, should be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+ ALIGN=MIDDLE  ALT=\"x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "b) <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%5E2-19x%2B28=%283x-4%29%28x-7%29 ALIGN=MIDDLE  ALT=\"3x%5E2-19x%2B28=%283x-4%29%28x-7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283x-4%29%28x-7%29 ALIGN=MIDDLE  ALT=\"%283x-4%29%28x-7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >....multiply<BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2Ax%2B3x%28-7%29-4%2Ax-4%28-7%29 ALIGN=MIDDLE  ALT=\"3x%2Ax%2B3x%28-7%29-4%2Ax-4%28-7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%5E2-21x+-4x%2B28 ALIGN=MIDDLE  ALT=\"3x%5E2-21x+-4x%2B28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%5E2-25x+%2B28 ALIGN=MIDDLE  ALT=\"3x%5E2-25x+%2B28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " mistake was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-19x ALIGN=MIDDLE  ALT=\"-19x\"   DISABLED_style= \"max-width:90%; height:auto;\" >, should be  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-25x ALIGN=MIDDLE  ALT=\"+-25x\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
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document.write( "c) \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6x%5E2%2B25x%2B4=%282x%2B1%29%283x%2B4%29 ALIGN=MIDDLE  ALT=\"6x%5E2%2B25x%2B4=%282x%2B1%29%283x%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282x%2B1%29%283x%2B4%29 ALIGN=MIDDLE  ALT=\"%282x%2B1%29%283x%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >...multiply<BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x%2A3x%2B2x%2A4%2B1%2A3x%2B1%2A4 ALIGN=MIDDLE  ALT=\"2x%2A3x%2B2x%2A4%2B1%2A3x%2B1%2A4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6x%5E2%2B8x%2B3x%2B4 ALIGN=MIDDLE  ALT=\"6x%5E2%2B8x%2B3x%2B4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6x%5E2%2B11x%2B4 ALIGN=MIDDLE  ALT=\"6x%5E2%2B11x%2B4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "mistake was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25x ALIGN=MIDDLE  ALT=\"25x\"   DISABLED_style= \"max-width:90%; height:auto;\" >, should be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x ALIGN=MIDDLE  ALT=\"11x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );