document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=155296>Question 155296</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My son has just entered grade 8 in high school and has asked me to solve this equation, <BR>\n" );
document.write( "9x²-36=9(x²-4)-9(x+2)(x-2) he says x=?<BR>\n" );
document.write( "I would be greatfull for any help<BR>\n" );
document.write( "Thanks<BR>\n" );
document.write( "John </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #114349 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=114349\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 9x²-36=9(x²-4)-9(x+2)(x-2)<BR>\n" );
document.write( "9x²-36=9x²-36-9(x²-4)<BR>\n" );
document.write( "9x²-36=9x²-36-9x²+36<BR>\n" );
document.write( "-36=-36-9x²+36<BR>\n" );
document.write( "0=0-9x²+36<BR>\n" );
document.write( "9x²=36<BR>\n" );
document.write( "x²=4<BR>\n" );
document.write( "x = sqrt(4)<BR>\n" );
document.write( "x = {-2,2}<BR>\n" );
document.write( ".<BR>\n" );
document.write( "x is plus or minus 2\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );