document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=120921>Question 120921</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I think this problem mostly has to do with the discriminant,but I tried the ways showed on the website and I'm still confused.\r<BR>\n" );
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document.write( "If 4x^2+kx+6=0 has one real root, find k. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #88732 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=88732\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If 4x^2+kx+6=0 has one real root, find k.<BR>\n" );
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document.write( "You are right about the discriminant.<BR>\n" );
document.write( "The discriminant must be zero if there is to be only one real root.<BR>\n" );
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document.write( "k^2-4*4*6=0<BR>\n" );
document.write( "k^2-96=0<BR>\n" );
document.write( "k = sqrt96 or k=-sqrt96<BR>\n" );
document.write( "k = 4sqrt6 or k= -4sqrt6<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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