document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=405782>Question 405782</A>: <I><SPAN STYLE=\"word-break: break-all;\"> using college math - quadratic equations - i factored this out like this:<BR>\n" );
document.write( " 3x^2+5x-12=0<BR>\n" );
document.write( "(3x+4) (x-3)<BR>\n" );
document.write( "   -4    +3<BR>\n" );
document.write( "  x= -4  x=3\r<BR>\n" );
document.write( "\n" );
document.write( "1)now i need to use the form x^2 = k, then = +- sqrt k<BR>\n" );
document.write( "how do i do that?<BR>\n" );
document.write( "The only example i have is this, but i don't understand where they got the 6 and the 2 from.  <BR>\n" );
document.write( "  x^2=72<BR>\n" );
document.write( "  x=+-sqrt72<BR>\n" );
document.write( "x = +-6sqrt2\r<BR>\n" );
document.write( "\n" );
document.write( "How do i use the x^2=k for 3x^2+5x-12=0<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #286553 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=286553\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3x^2+5x-12=0<BR>\n" );
document.write( "(3x+4)(x-3) = 0<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Since the product is zero, one or those factors is zero.<BR>\n" );
document.write( "Solve: <BR>\n" );
document.write( "3x+4 = 0<BR>\n" );
document.write( "x = -4/3<BR>\n" );
document.write( "----<BR>\n" );
document.write( "x-3 = 0<BR>\n" );
document.write( "x = 3<BR>\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "1)now i need to use the form x^2 = k, then = +- sqrt k<BR>\n" );
document.write( "how do i do that?<BR>\n" );
document.write( "The only example i have is this, but i don't understand where they got the 6 and the 2 from. <BR>\n" );
document.write( "x^2=72<BR>\n" );
document.write( "x=+-sqrt72<BR>\n" );
document.write( "x = +-sqrt(36*2)<BR>\n" );
document.write( "x = +-[sqrt(36)*sqrt(2)]<BR>\n" );
document.write( "x = +-6sqrt2<BR>\n" );
document.write( "========================================== <BR>\n" );
document.write( "How do I use the x^2=k for 3x^2+5x-12=0<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Comment:<BR>\n" );
document.write( "You don't; you have already solved the<BR>\n" );
document.write( "equation by factoring and using the <BR>\n" );
document.write( "zero product method.<BR>\n" );
document.write( "=========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=============<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );