document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1015514>Question 1015514</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find k if the roots of the equation (k+3)x^2 - 2(k+1)x - (k+1) = 0 are equal. If k is not equal to -3. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #631866 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=631866\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (k+3)x^2 - 2(k+1)x - (k+1) = 0<BR>\n" );
document.write( "if the roots are zero, b^2-4ac=0<BR>\n" );
document.write( "b^2=4ac<BR>\n" );
document.write( "b^2=(-2(k+1))^2=4k^2+8k+4<BR>\n" );
document.write( "4ac=4k^2+16k+12<BR>\n" );
document.write( "set them equal<BR>\n" );
document.write( "4k^2+8k+4=4k^2+16k+12<BR>\n" );
document.write( "8k+4=16k+12<BR>\n" );
document.write( "8k=-8<BR>\n" );
document.write( "k=-1<BR>\n" );
document.write( "2x^2=0<BR>\n" );
document.write( "x=0,0 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );