document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=969438>Question 969438</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The square of marks age 3 years ago is equal to 6 times marks age in 9 years. What is his age now. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #592344 by </B><A HREF=/tutors/aboutme.mpl?userid=JoelSchwartz><B>JoelSchwartz(130)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=JoelSchwartz><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=592344\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> m=marks age currently<BR>\n" );
document.write( "(m-3)^2=6(m+9)<BR>\n" );
document.write( "m^2-6m+9=6m+54<BR>\n" );
document.write( "m^2-12m-45=0<BR>\n" );
document.write( "(m-15)(m+3)=0<BR>\n" );
document.write( "(m-15)(m+3)=m^2-12m-45<BR>\n" );
document.write( "m=15 or m=-3<BR>\n" );
document.write( "Since marks age has to be positive his current age is 15. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );