document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1028077>Question 1028077</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a^2&#8722;8ab+16b^2=81, find a–4b </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #643256 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=643256\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We can factor<BR>\n" );
document.write( "a^2 - 8ab + 16b^2 = 81<BR>\n" );
document.write( "and get<BR>\n" );
document.write( "(a - 4b)^2 = 81<BR>\n" );
document.write( "Now taking the square root of both sides we get<BR>\n" );
document.write( "a - 4b = 9 or<BR>\n" );
document.write( "a - 4b = -9<BR>\n" );
document.write( "Two solutions. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );