document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=239525>Question 239525</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the sum of 2 numbers is 39 and the product is 360 what is the formula to calculate. I used my calculator and got 24 and 15 but my math teacher says I shouldn't use trial and error method<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #175777 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=175777\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the two numbers: x, y<BR>\n" );
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document.write( "Write an equation for each statement:<BR>\n" );
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document.write( "the sum of 2 numbers is 39<BR>\n" );
document.write( "x + y = 39<BR>\n" );
document.write( "y = (39-x); use this form for substitution<BR>\n" );
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document.write( "the product is 360<BR>\n" );
document.write( "x * y = 360<BR>\n" );
document.write( "Substitute (39-x) for y<BR>\n" );
document.write( "x * (39-x) = 360<BR>\n" );
document.write( "39x - x^2 = 360<BR>\n" );
document.write( "A quadratic equation<BR>\n" );
document.write( "-x^2 + 39x - 360 = 0<BR>\n" );
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document.write( "what is the formula to calculate.<BR>\n" );
document.write( "Solve the above equation for x, then find y<BR>\n" );
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