document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=855999>Question 855999</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve for all real values of x in radians. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2cos%5E2x-5cosx%2B2=0 ALIGN=MIDDLE  ALT=\"2cos%5E2x-5cosx%2B2=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #515671 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=515671\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve for all real values of x in radians. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2cos%5E2%28x%29-5cos%28x%29%2B2=0 ALIGN=MIDDLE  ALT=\"2cos%5E2%28x%29-5cos%28x%29%2B2=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2cos(x)) - 1)*(cos(2x) - 2) = 0<BR>\n" );
document.write( "------<BR>\n" );
document.write( "cos(x) = 1/2<BR>\n" );
document.write( "x = pi/3 + 2n*pi, n = 0,1,2,3...<BR>\n" );
document.write( "x = 5pi/3 + 2n*pi, n = 0,1,2,3...<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "cos(x) = 1<BR>\n" );
document.write( "x = 0 + n*pi, n = 0,1,2,3... </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );