document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=889019>Question 889019</A>: <I><SPAN STYLE=\"word-break: break-all;\"> FIVE Years hence, a boys age will four times the square of his age nine years ago.<BR>\n" );
document.write( "how old is the boy now?<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 #537834 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=537834\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> FIVE Years hence, a boys age will four times the square of his age nine years ago.<BR>\n" );
document.write( " how old is the boy now?<BR>\n" );
document.write( " ----------------------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "Let his age \"x\"::<BR>\n" );
document.write( "x + 5 = 4(x-9)^2<BR>\n" );
document.write( "x + 5 = 4[x^2 - 18x + 81]<BR>\n" );
document.write( "x + 5 = 4x^2 - 72x + 324<BR>\n" );
document.write( "4x^2 -73x + 319 = 0<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "x = 11 years<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "===================== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );