document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=703345>Question 703345</A>: <I><SPAN STYLE=\"word-break: break-all;\"> axb=-144\r<BR>\n" );
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document.write( "a+b=-7\r<BR>\n" );
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document.write( "solve using algebra?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #433468 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=433468\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> axb=-144\r<BR>\n" );
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document.write( "a+b=-7<BR>\n" );
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document.write( "Use * (Shift 8) for multiply<BR>\n" );
document.write( "a*b=-144\r<BR>\n" );
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document.write( "a+b=-7<BR>\n" );
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document.write( "Find 2 factors of 144 that differ by 7, one +, one minus.<BR>\n" );
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document.write( "Factors:<BR>\n" );
document.write( "1*144<BR>\n" );
document.write( "2*72<BR>\n" );
document.write( "3*48<BR>\n" );
document.write( "4*36<BR>\n" );
document.write( "6*24<BR>\n" );
document.write( "8*18<BR>\n" );
document.write( "9*16   difference = 7<BR>\n" );
document.write( "--> -16 and 9<BR>\n" );
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document.write( "Using algebra:<BR>\n" );
document.write( "a*b=-144\r<BR>\n" );
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document.write( "a+b=-7 --> b = -a-7<BR>\n" );
document.write( "Sub for b in the 1st eqn<BR>\n" );
document.write( "a*(-a-7) = -144<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-a%5E2+-+7a+=+-144 ALIGN=MIDDLE  ALT=\"-a%5E2+-+7a+=+-144\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5E2+%2B+7a+-+144+=+0 ALIGN=MIDDLE  ALT=\"a%5E2+%2B+7a+-+144+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now find 2 factors of -144 that differ by 7, same as above.<BR>\n" );
document.write( "(a + 16)*(a - 9) = 0<BR>\n" );
document.write( "a = 9, b = -16 or vice versa<BR>\n" );
document.write( "same answer </SPAN>\n" );
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