document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=77400>Question 77400</A>: <I><SPAN STYLE=\"word-break: break-all;\"> z^2+9=10z\r<BR>\n" );
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document.write( "and\r<BR>\n" );
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document.write( "n^2+n=72 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #55518 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=55518\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "z^2+9=10z<BR>\n" );
document.write( "z^2-10z+9=0<BR>\n" );
document.write( "(z-9)(z-1)=0<BR>\n" );
document.write( "z=9 or z=1<BR>\n" );
document.write( "-------------------- <BR>\n" );
document.write( "and <BR>\n" );
document.write( "n^2+n=72<BR>\n" );
document.write( "n^2+n-72=0<BR>\n" );
document.write( "(n+9)(n-8)=0<BR>\n" );
document.write( "n=-9 or n=8<BR>\n" );
document.write( "===========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );