document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=163331>Question 163331</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me with this problem?  I am stumped!\r<BR>\n" );
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document.write( "Find a value for k that will make 4x^2+6.4x+k a perfect square.  I need to describe the procedure that I used.\r<BR>\n" );
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document.write( "All I can figure so far is:<BR>\n" );
document.write( "k=?<BR>\n" );
document.write( "4x^2+6.4x+k </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #120354 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=120354\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find a value for k that will make 4x^2 + 6.4x + k a perfect square. I need to describe the procedure that I used.<BR>\n" );
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document.write( "We want the coefficient of x^2 to be 1, divide equation by 4, resulting in:<BR>\n" );
document.write( "x^2 + 1.6x + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%2F4 ALIGN=MIDDLE  ALT=\"k%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
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document.write( "To find the 3rd term, divide the coefficient of x by 2 and square it<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%2F4 ALIGN=MIDDLE  ALT=\"k%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281.6%2F2%29%5E2 ALIGN=MIDDLE  ALT=\"%281.6%2F2%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%2F4 ALIGN=MIDDLE  ALT=\"k%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > = .64<BR>\n" );
document.write( "k = 4*.64<BR>\n" );
document.write( "k = 2.56<BR>\n" );
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document.write( "The equation: 4x^2 + 6.4x + 2.56 which is (2x + 1.6)^2<BR>\n" );
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