document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=734528>Question 734528</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve n(n+2) = 360 I am not sure how to do this one<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #449014 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=449014\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> rewrite the given equation by multiplying by n and regrouping we have\r<BR>\n" );
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document.write( "n^2 + 2n - 360 = 0\r<BR>\n" );
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document.write( "now we can use the quadratic equation\r<BR>\n" );
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document.write( "x = minus b plus or minus the square root of b^2 - 4ac divided by 2a\r<BR>\n" );
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document.write( "the general formula for solution is ax^2 + bx + c = 0\r<BR>\n" );
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document.write( "now we can substitute in the quadratic equation\r<BR>\n" );
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document.write( "x = -2 + square root(4-(4*1*-360)/2= 18<BR>\n" );
document.write( "x = -2 - square root(4-(4*1*-360)/2= -20 </SPAN>\n" );
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