document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=28176>Question 28176</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do you solve?   m^2 + m - 72 = 0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #15360 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=15360\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve: Try factoring.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5E2+%2B+m+-+72 ALIGN=MIDDLE  ALT=\"m%5E2+%2B+m+-+72\"   DISABLED_style= \"max-width:90%; height:auto;\" > The factors will have the form: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28m+%2B+a%29%28m+%2B+b%29 ALIGN=MIDDLE  ALT=\"%28m+%2B+a%29%28m+%2B+b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > where:<BR>\n" );
document.write( "a + b = 1 and a*b = -72\r<BR>\n" );
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document.write( "Try: a = -8 and b = 9<BR>\n" );
document.write( "-8+9 = 1<BR>\n" );
document.write( "(-8)(9) = -72 \r<BR>\n" );
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document.write( "So,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5E2+%2B+m+-+72+=+0 ALIGN=MIDDLE  ALT=\"m%5E2+%2B+m+-+72+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Factor.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28m+-+8%29%28m+%2B+9%29+=+0 ALIGN=MIDDLE  ALT=\"%28m+-+8%29%28m+%2B+9%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Apply the zero products principle.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m-8+=+0 ALIGN=MIDDLE  ALT=\"m-8+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > and/or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m+%2B+9+=+0 ALIGN=MIDDLE  ALT=\"m+%2B+9+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "If<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m-8+=+0 ALIGN=MIDDLE  ALT=\"m-8+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > then <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m+=+8 ALIGN=MIDDLE  ALT=\"m+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "If<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%2B9+=+0 ALIGN=MIDDLE  ALT=\"m%2B9+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > then <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m+=+-9 ALIGN=MIDDLE  ALT=\"m+=+-9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The roots (solutions) are:<BR>\n" );
document.write( "x = -8<BR>\n" );
document.write( "x = 9 </SPAN>\n" );
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