document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=44696>Question 44696</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534493947/algebrahomeworkh>Intermediate Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I am having trouble with this problem I have gotten about half way through and can not figure out the rest. \r<BR>\n" );
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document.write( "Use the quadratic formula to solve each equation.<BR>\n" );
document.write( "900x^2 - 8,100x = 1,800\r<BR>\n" );
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document.write( "This is what I have come up with so far, Maybe I am making a mistake that I am overlooking.\r<BR>\n" );
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document.write( "900x^2/90 - 8,100x/90 = 1,800/90<BR>\n" );
document.write( "10x^2 - 90x = 20<BR>\n" );
document.write( "10x^2 - 90x - 20 = 0<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%5B-%28-90%29%2Bplus_minus-sqrt%28%28-90%29%5E2+-+4%2810%29%28-20%29%29%5D%2F2%2810%29+ ALIGN=MIDDLE  ALT=\"+x+=+%5B-%28-90%29%2Bplus_minus-sqrt%28%28-90%29%5E2+-+4%2810%29%28-20%29%29%5D%2F2%2810%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%5B-%28-90%29%2Bplus_minus-sqrt%288%2C100+%2B+800%29%2F20+ ALIGN=MIDDLE  ALT=\"+x+=+%5B-%28-90%29%2Bplus_minus-sqrt%288%2C100+%2B+800%29%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%5B-%28-90%29%2Bplus_minus-sqrt%288%2C900%29%2F20+ ALIGN=MIDDLE  ALT=\"+x+=+%5B-%28-90%29%2Bplus_minus-sqrt%288%2C900%29%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This is where I have gotten stuck. <BR>\n" );
document.write( "I hope this problem is readable, I am having trouble figuring out the right way to type it on here. <BR>\n" );
document.write( "Thanks in advance for any help you can provide me.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #29569 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=29569\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 900x^2 - 8,100x = 1,800 \r<BR>\n" );
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document.write( "Divide both sides by 900 to get:<BR>\n" );
document.write( "x^2-9x=2<BR>\n" );
document.write( "x^2-9x-2=0\r<BR>\n" );
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document.write( "x=[9+sqrt(81+8)]/2 or x=[9-sqrt(90)]/2<BR>\n" );
document.write( "Simplify a little to get:<BR>\n" );
document.write( "x=[9+3sqrt10]/2 or x=[9-3sqrt(10)]/2\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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