document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=67212>Question 67212</A>: <I><SPAN STYLE=\"word-break: break-all;\"> help me solve quadractic equations by graphing<BR>\n" );
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document.write( "2x(squared) + 4x= 6 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #47781 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=47781\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> help me solve quadractic equations by graphing:  <BR>\n" );
document.write( "y = 2x^2 + 4x - 6<BR>\n" );
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document.write( "You could plot some points to see the graph.<BR>\n" );
document.write( "or<BR>\n" );
document.write( "You could find the vertex at (-b/2a, f(-b/2a))<BR>\n" );
document.write( "-b/2a=-4/4=-1 <BR>\n" );
document.write( "f(-1)=2-4-6=-8\r<BR>\n" );
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document.write( "So the vertex is at (-1,-8)<BR>\n" );
document.write( "The y-intercept is at f(0)=-6<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "The graph looks like this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C2x%5E2%2B4x-6%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C2x%5E2%2B4x-6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );