document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=367304>Question 367304</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve each formula for the indicated letter.  Assume that all variables represent nonnegative numbers.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+N=+%28x%5E2-3x%29%2F%282%29+ ALIGN=MIDDLE  ALT=\"+N=+%28x%5E2-3x%29%2F%282%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >  solve for x<BR>\n" );
document.write( "(number of diagonals of polygon with x sides) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #261900 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=261900\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ureka!<BR>\n" );
document.write( "n=(x^2-3x)/(2)<BR>\n" );
document.write( "x^2-3x=2n<BR>\n" );
document.write( "x^2-3x+ 9/4=2n + 9/4 Completing the square.<BR>\n" );
document.write( "(x - 3/2)^2 = 2n + 9/4<BR>\n" );
document.write( "x - 3/2 = +-sqrt(2n + 9/4)<BR>\n" );
document.write( "x=3/2 +- sqrt((8n+9)/4)<BR>\n" );
document.write( "=3/2 +- sqrt(8n-9)/2<BR>\n" );
document.write( "x=(3+sqrt(8n-9))/2, x=(3-sqrt(8n-9))/2<BR>\n" );
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document.write( "Ed<BR>\n" );
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