document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=939556>Question 939556</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an integer c such that the equation 4x^2+cx=9=0 has a double real root. <BR>\n" );
document.write( "please help me with this problem thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #572543 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=572543\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Want two solutions.\r<BR>\n" );
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document.write( "You wrote two equality symbols, so I am using the first of them as a PLUS sign.\r<BR>\n" );
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document.write( "Try discriminant.  You do not want a square, but you want two different solutions for x.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c%5E2-4%2A4%2A9 ALIGN=MIDDLE  ALT=\"c%5E2-4%2A4%2A9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The discriminant needs to be positive.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c%5E2-16%2A9 ALIGN=MIDDLE  ALT=\"c%5E2-16%2A9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c%5E2=16%2A9 ALIGN=MIDDLE  ALT=\"c%5E2=16%2A9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=12 ALIGN=MIDDLE  ALT=\"c=12\"   DISABLED_style= \"max-width:90%; height:auto;\" >------------the value if exactly one real root.  But you want TWO real roots, and want c as integer.\r<BR>\n" );
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document.write( "c can be any of   c=13 or c=14, or ANY integer greater than 12. </SPAN>\n" );
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