document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=620620>Question 620620</A>: <I><SPAN STYLE=\"word-break: break-all;\"> hi, my quadratic equation is (x+5)(x+8) =126.75<BR>\n" );
document.write( "ive got these steps with help from a friend but as i need to show my working this wont be enough, i struggle with quadratics, what stages am i missing here?\r<BR>\n" );
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document.write( "X^2 + 13X  –  86.75 =0<BR>\n" );
document.write( "X=4.85782<BR>\n" );
document.write( "X=4.85\r<BR>\n" );
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document.write( "thanks<BR>\n" );
document.write( "Sam </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #390325 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10552)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=390325\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "hi, my quadratic equation is (x+5)(x+8) =126.75<BR>\n" );
document.write( "ive got these steps with help from a friend but as i need to show my working this wont be enough, i struggle with quadratics, what stages am i missing here?\r<BR>\n" );
document.write( "\n" );
document.write( "X^2 + 13X  –  86.75 =0<BR>\n" );
document.write( "X=4.85782<BR>\n" );
document.write( "X=4.85\r<BR>\n" );
document.write( "\n" );
document.write( "thanks<BR>\n" );
document.write( "Sam\r<BR>\n" );
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document.write( "You seem to have forgotten about the negative value of x. That's all!!\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+13x+-+86.75+=+0 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+13x+-+86.75+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >, with a = 1; b = 13; and c = - 86.75\r<BR>\n" );
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document.write( "Using the quadratic equation<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >, we get:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-+13+%2B-+sqrt%28+13%5E2-4%2A1%2A-86.75+%29%29%2F%282%2A1%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-+13+%2B-+sqrt%28+13%5E2-4%2A1%2A-86.75+%29%29%2F%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > ----- <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-+13+%2B-+sqrt%28+169+%2B+347%29%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-+13+%2B-+sqrt%28+169+%2B+347%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > ------ <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-+13+%2B-+sqrt%28516%29%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-+13+%2B-+sqrt%28516%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-+13+%2B-+%2822.71563338%29%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-+13+%2B-+%2822.71563338%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-+13+%2B+22.71563338%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-+13+%2B+22.71563338%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-+13+-+22.71563338%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-+13+-+22.71563338%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%289.71563338%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%289.71563338%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-+35.71563338%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-+35.71563338%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28x+=+4.85781669%29 ALIGN=MIDDLE  ALT=\"highlight_green%28x+=+4.85781669%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28x+=+-+17.85781669%29 ALIGN=MIDDLE  ALT=\"highlight_green%28x+=+-+17.85781669%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Send comments and “thank-yous” to “D” at  MathMadEzy@aol.com  </SPAN>\n" );
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