document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=949476>Question 949476</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can you solve this problem<BR>\n" );
document.write( "4cos^2x - 4cosx + 1 = 0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #579656 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=579656\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> can you solve this problem<BR>\n" );
document.write( "4cos^2x - 4cosx + 1 = 0<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Yes, I can.<BR>\n" );
document.write( "(2cos(x) - 1)^2 = 0<BR>\n" );
document.write( "2cos(x) = 1<BR>\n" );
document.write( "cos(x) = 1/2<BR>\n" );
document.write( "x = pi/3 + n*2pi, n = 0,1,2,3...<BR>\n" );
document.write( "x = 2pi/3 + n*2pi, n = 0,1,2,3...<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );