document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1161776>Question 1161776</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2sec^2 x-5 sec x+2=0\r<BR>\n" );
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document.write( "cos 2x-2 sinx- cos^2 x=-3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #785380 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=785380\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2sec%28x%29%5E2-5sec%28x%29%2B2+=+0 ALIGN=MIDDLE  ALT=\"2sec%28x%29%5E2-5sec%28x%29%2B2+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Factor like a quadratic, treating \"sec(x)\" as the variable.<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282sec%28x%29-1%29%28sec%28x%29-2%29+=+0 ALIGN=MIDDLE  ALT=\"%282sec%28x%29-1%29%28sec%28x%29-2%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sec%28x%29+=+1%2F2%29 ALIGN=MIDDLE  ALT=\"sec%28x%29+=+1%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > OR <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sec%28x%29+=+2 ALIGN=MIDDLE  ALT=\"sec%28x%29+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Take reciprocals to change sec(x) to cos(x).<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%29+=+2 ALIGN=MIDDLE  ALT=\"cos%28x%29+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" > OR <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%29+=+1%2F2 ALIGN=MIDDLE  ALT=\"cos%28x%29+=+1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "You can finish from there....<br><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%282x%29-2sin%28x%29-cos%28x%29%5E2+=+-3 ALIGN=MIDDLE  ALT=\"cos%282x%29-2sin%28x%29-cos%28x%29%5E2+=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Substitute for cos(2x); use <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%29%5E2-sin%28x%29%5E2 ALIGN=MIDDLE  ALT=\"cos%28x%29%5E2-sin%28x%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, since the cosines will cancel, leaving a quadratic in sin(x).<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28cos%28x%29%5E2-sin%28x%29%5E2%29-2sin%28x%29-cos%28x%29%5E2+=+-3 ALIGN=MIDDLE  ALT=\"%28cos%28x%29%5E2-sin%28x%29%5E2%29-2sin%28x%29-cos%28x%29%5E2+=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-sin%28x%29%5E2-2sin%28x%29+=+-3 ALIGN=MIDDLE  ALT=\"-sin%28x%29%5E2-2sin%28x%29+=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%29%5E2%2B2sin%28x%29-3+=+0 ALIGN=MIDDLE  ALT=\"sin%28x%29%5E2%2B2sin%28x%29-3+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sin%28x%29%2B3%29%28sin%28x%29-1%29+=+0 ALIGN=MIDDLE  ALT=\"%28sin%28x%29%2B3%29%28sin%28x%29-1%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%29+=+-3 ALIGN=MIDDLE  ALT=\"sin%28x%29+=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" > OR <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%29+=+1 ALIGN=MIDDLE  ALT=\"sin%28x%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Again you can finish....<br><BR>\n" );
document.write( " </SPAN>\n" );
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