document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1114373>Question 1114373</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If 4x²+5kx+10 is a perfect square, find the value of k. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #729326 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=729326\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  If 4x²+5kx+10 is a perfect square, find the value of k. <BR>\n" );
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document.write( "Note: (a+b)^2 = a^2+2ab+b^2<BR>\n" );
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document.write( "Note: The coefficient of the middle term is 2 times the product<BR>\n" );
document.write( "of the square roots of the 1st and the 3rd terms.<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "5k = 2(2x)(sqrt(10))<BR>\n" );
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document.write( "5k = 4x*sqrt(10)<BR>\n" );
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document.write( "Ans: k = (4/5)x(sqrt(10))<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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