document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=84683>Question 84683</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve using Q. F. Formula  x=-b+- sq b-4ac/2a\r<BR>\n" );
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document.write( "2x^2+x-1=0   the answer is 1/2,1\r<BR>\n" );
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document.write( "I'm new to these so please help....thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #61023 by </B><A HREF=/tutors/aboutme.mpl?userid=uma><B>uma(370)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=uma><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=61023\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If the equation is of the form ax^2 + bx + c = 0, then by formula,\r<BR>\n" );
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document.write( "<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;\" >\r<BR>\n" );
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document.write( "The given equation is 2x^2 + x - 1 = 0,\r<BR>\n" );
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document.write( "where a = 2, b = 1 and c = -1.\r<BR>\n" );
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document.write( "So plugging in the above formula,\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-1+%2B-+sqrt%28+1%5E2-4%2A2%2A%28-1%29+%29%29%2F%282%2A2%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-1+%2B-+sqrt%28+1%5E2-4%2A2%2A%28-1%29+%29%29%2F%282%2A2%29+\"   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+=+%28-1+%2B-+sqrt%28+1%2B8+%29%29%2F%284%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-1+%2B-+sqrt%28+1%2B8+%29%29%2F%284%29+\"   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+=+%28-1+%2B-+sqrt%28+9+%29%29%2F%284%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-1+%2B-+sqrt%28+9+%29%29%2F%284%29+\"   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+=+%28-1+%2B-+3%29%2F%284%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-1+%2B-+3%29%2F%284%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "==> x = (-1+3)/4  and x = (-1-3)/4\r<BR>\n" );
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document.write( "==> x = 2/4  and x = -4/4\r<BR>\n" );
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document.write( "==> x = 1/2  and x = -1\r<BR>\n" );
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document.write( "Good Luck!!! </SPAN>\n" );
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