document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=392792>Question 392792</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can you explain the quadratic equation? its so confusing!  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #278851 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=278851\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A quadratic equation is a single-variable, polynomial equation of degree 2. For example, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+4x%5E2+%2B+7x+-+5 ALIGN=MIDDLE  ALT=\"f%28x%29+=+4x%5E2+%2B+7x+-+5\"   DISABLED_style= \"max-width:90%; height:auto;\" > is quadratic but <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+5x%5E3+-+1 ALIGN=MIDDLE  ALT=\"f%28x%29+=+5x%5E3+-+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+%28x%5E2+%2B+x+-+1%29%2F4x ALIGN=MIDDLE  ALT=\"f%28x%29+=+%28x%5E2+%2B+x+-+1%29%2F4x\"   DISABLED_style= \"max-width:90%; height:auto;\" > are not quadratic.\r<BR>\n" );
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document.write( "The quadratic formula says that for any quadratic polynomial in the form <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax%5E2+%2B+bx+%2B+c ALIGN=MIDDLE  ALT=\"ax%5E2+%2B+bx+%2B+c\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the two roots are in the form <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28b%5E2+-+4ac%29%29%2F2a ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28b%5E2+-+4ac%29%29%2F2a\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Quadratics can also be solved by factoring, but it's not very easy to do since you have to assume that the roots are integers, and you'll have to quickly determine the factorization of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c ALIGN=MIDDLE  ALT=\"c\"   DISABLED_style= \"max-width:90%; height:auto;\" > that satisfies.\r<BR>\n" );
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document.write( "Here's a Wikipedia article on quadratic equations:<BR>\n" );
document.write( "http://en.wikipedia.org/wiki/Quadratic_equation </SPAN>\n" );
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