document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=725723>Question 725723</A>: <I><SPAN STYLE=\"word-break: break-all;\">  i don't get how you do this work X^2+22x+21=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #444294 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=444294\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> X^2+22x+21=0<BR>\n" );
document.write( "(X+21)(X+1)=0<BR>\n" );
document.write( "X+21=0<BR>\n" );
document.write( "X=-21 ANS.<BR>\n" );
document.write( "X+1=0<BR>\n" );
document.write( "X=-1 ANS.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "-21^2+22(-21)+21=0<BR>\n" );
document.write( "441-462-21=0<BR>\n" );
document.write( "441-441=0<BR>\n" );
document.write( "0=0 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );