document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=175026>Question 175026</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For which value(s) of k will the roots of 4x^2 + kx + 1 = 0 be real and unequal? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #130126 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=130126\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For which value(s) of k will the roots of 4x^2 + kx + 1 = 0 be real and unequal?<BR>\n" );
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document.write( "determinant = k^2 - 4*4*1 = k^2-16<BR>\n" );
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document.write( "To have real and unequal roots the determinant must be > 0.<BR>\n" );
document.write( "k^2-16 > 0<BR>\n" );
document.write( "k^2 > 16<BR>\n" );
document.write( "k > 4 or k < -4<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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