document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1075591>Question 1075591</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If c is a nonzero constant such that x^2+cx+9c is equal to the square of a binomial, then what is c? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #690269 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=690269\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The discrimant has to equal 0 for the roots to be the same<BR>\n" );
document.write( "sqrt(b^2-4ac) becomes sqrt(c^2-4*9*c)=sqrt(c^2-36c)<BR>\n" );
document.write( "That equals 0, so c^2-36c=0<BR>\n" );
document.write( "c=0,36, and 0 isn't allowed<BR>\n" );
document.write( "c=36<BR>\n" );
document.write( "x^2+36x+324=0<BR>\n" );
document.write( "This is (x+18)^2=0 </SPAN>\n" );
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