document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=240240>Question 240240</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i need the formula for how to find the equation of a curved line graph eg y=_xsquared +_x + _ </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #176101 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=176101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If you mean a quadratic equation, the formula is:\r<BR>\n" );
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document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-b+%2B-+sqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"%28-b+%2B-+sqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "standard form of the quadratic equation is:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax%5E2+%2B+bx+%2B+c+=+0 ALIGN=MIDDLE  ALT=\"ax%5E2+%2B+bx+%2B+c+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > where:\r<BR>\n" );
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document.write( "a is the coefficient of the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2 ALIGN=MIDDLE  ALT=\"x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > term.\r<BR>\n" );
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document.write( "b is the coefficient of the x term.\r<BR>\n" );
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document.write( "c is the constant.\r<BR>\n" );
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document.write( "You solve for x.\r<BR>\n" );
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document.write( "The y value is 0 because you set the equation equal to 0.\r<BR>\n" );
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document.write( "Your roots are:\r<BR>\n" );
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document.write( "(x,y) = (x,0) where you replace x with the values you calculated for x.\r<BR>\n" );
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document.write( "The roots can be real or imaginary.\r<BR>\n" );
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document.write( "If the roots are real, the graph of the equation crosses the x-axis at y = 0.\r<BR>\n" );
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document.write( "If the roots are not real (contain  an imaginary part which is a negative square root) then the graph of the equation will not cross the x-axis.\r<BR>\n" );
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document.write( "The quadratic formula works on all quadratic equations whether the roots are real or imaginary.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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