document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=447202>Question 447202</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The units digit of a two digit number is 1 less than twice the tens digit. The square of the tens digit is 9 more than the units digit. Find the number.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #307937 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel1380><B>jorel1380(3719)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel1380><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=jorel1380><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=307937\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x=y+1<BR>\n" );
document.write( "x2=y+9<BR>\n" );
document.write( "2x-1=y<BR>\n" );
document.write( "x2=2x-1+9<BR>\n" );
document.write( "x2-2x-8=0<BR>\n" );
document.write( "(x-4)(x+2)=0<BR>\n" );
document.write( "x=4 or -2<BR>\n" );
document.write( "Throwing out the negative number, we get x=4, y=7; thus the number is 47..<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );