document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=301587>Question 301587</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Right now we are solving these Quadratic Equations with the zero factor<BR>\n" );
document.write( "property. The problem is a word problem:<BR>\n" );
document.write( "If the cost, C, for maunufactoring x units of a certain product is given<BR>\n" );
document.write( "by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=x%5E2-15x%2B40 ALIGN=MIDDLE  ALT=\"c=x%5E2-15x%2B40\"   DISABLED_style= \"max-width:90%; height:auto;\" > find the number of units maufactored at a cost of $12,640.\r<BR>\n" );
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document.write( "I already started the problem by solving for x and rewriting the<BR>\n" );
document.write( "equation in standard form:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-15x-12600=0 ALIGN=MIDDLE  ALT=\"x%5E2-15x-12600=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > that is my ending result, I now have to factor<BR>\n" );
document.write( "the quadratic expression but I am stuck, I use the \"diamond method\" to help<BR>\n" );
document.write( "me factor- I need to know what two numbers have the product of -12600 and have the sum of -15. <BR>\n" );
document.write( "I can solve the rest of the problem after You help me find those two numbers. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #216220 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=216220\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How about using the quadratic formula?\r<BR>\n" );
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document.write( "It works every time.\r<BR>\n" );
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document.write( "In the quadratic formula, let a = 1, b = -15 and c = -12,600.\r<BR>\n" );
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document.write( "Then plug and chug.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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