document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=131835>Question 131835</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you solve this so I can understand f(x)=-2x^2+2x+6 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #96253 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=96253\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How do you solve this so I can understand f(x)=-2x^2+2x+6<BR>\n" );
document.write( "You cannot \"solve\" it when you have two variables.<BR>\n" );
document.write( "Maybe this is what you mean.<BR>\n" );
document.write( "-2x^2+2x+6 = 0<BR>\n" );
document.write( "-2(x^2-x-3) = 0<BR>\n" );
document.write( "Divide thru by -2 to get:<BR>\n" );
document.write( "x^2-x-3 = 0<BR>\n" );
document.write( "Now use the quadratic formula to get:<BR>\n" );
document.write( "x = [1 +- sqrt(1 -4*-3)]/2<BR>\n" );
document.write( "x = [1 +- sqrt(13)]/2<BR>\n" );
document.write( "x = (1+sqrt(13)]/2 or x = (1-sqrt(13))/2<BR>\n" );
document.write( "==========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );