document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=32709>Question 32709</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by quadratic formula:<BR>\n" );
document.write( "x squared = 4x + 12 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #19151 by </B><A HREF=/tutors/aboutme.mpl?userid=mukhopadhyay><B>mukhopadhyay(490)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mukhopadhyay><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=19151\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^2 = 4x + 12<BR>\n" );
document.write( "=> x^2-4x-12=0<BR>\n" );
document.write( "Based on quadratic formula, the roots of ax^2+bx+c = 0 are<BR>\n" );
document.write( "[-b+sqrt(b^2-4ac)]/2a and [-b-sqrt(b^2-4ac)]/2a;<BR>\n" );
document.write( "Here a = 1, b=-4, and c=-12<BR>\n" );
document.write( "The roots are: [4+sqrt(16+48)]/2 and [4-sqrt(16+48)]/2;<BR>\n" );
document.write( "=> The roots are 6 and -2;<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );