document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=412387>Question 412387</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello...\r<BR>\n" );
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document.write( "I am trying to figure out what q is when 0 = -2q^2 + 820q - 8000\r<BR>\n" );
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document.write( "I can see that i need to add 8000 to both sides...\r<BR>\n" );
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document.write( "-2q^2 + 820q = 8000\r<BR>\n" );
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document.write( "but then i am not sure where to go from here... what are the rules for this? thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #289651 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=289651\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 0 = -2q^2 + 820q - 8000\r<BR>\n" );
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document.write( "divide both sides by -1<BR>\n" );
document.write( "0=2q^2-820q+8000<BR>\n" );
document.write( "/2<BR>\n" );
document.write( "q^2-410+4000=0<BR>\n" );
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document.write( "q^2-400q-10q+4000=0<BR>\n" );
document.write( "(split the middle term into two terms such that their sum is -410 and product is 4000)<BR>\n" );
document.write( "...\r<BR>\n" );
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document.write( "q(q-400)-10(q-400)=0<BR>\n" );
document.write( "(q-400)(q-10)=0\r<BR>\n" );
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document.write( "q=400 OR q=10 </SPAN>\n" );
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