document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=623440>Question 623440</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x² – 13x – 5 = 0 I need to solve this by completing the square.Which I think I have done? I also need to solve it graphically using the intersections of two equations. I'm not which two equations to use or how the intersction will help me find the solution?\r<BR>\n" );
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document.write( "Here is my work: completing the square\r<BR>\n" );
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document.write( "x² – 13x – 5 = 0<BR>\n" );
document.write( "(x² -13x + 169/4)-5- 169/4 = 0<BR>\n" );
document.write( "(x-13/2)(x-13/2)- 147/4 =0<BR>\n" );
document.write( "(x- 13/2)² - 147/4 =0<BR>\n" );
document.write( "(x- 13/2)² = 147/4 Take the square root of both sides<BR>\n" );
document.write( "x- 13/2 = +- the square root of 147/4<BR>\n" );
document.write( "x= +- the square root of 147/2 + 13/2\r<BR>\n" );
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document.write( "Is this right? I feel like I'm missing something or doing something wrong.<BR>\n" );
document.write( "Thanks for all of the help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #392108 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=392108\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x² – 13x – 5 = 0 I need to solve this by completing the square.Which I think I have done? I also need to solve it graphically using the intersections of two equations. I'm not which two equations to use or how the intersction will help me find the solution? <BR>\n" );
document.write( "Here is my work: completing the square <BR>\n" );
document.write( "x² – 13x – 5 = 0<BR>\n" );
document.write( "(x² -13x + 169/4)-5- 169/4 = 0<BR>\n" );
document.write( "(x-13/2)(x-13/2)- 147/4 =0 ************** c = -189/4<BR>\n" );
document.write( "(x- 13/2)² - 147/4 =0<BR>\n" );
document.write( "(x- 13/2)² = 147/4 Take the square root of both sides<BR>\n" );
document.write( "x- 13/2 = +- the square root of 147/4<BR>\n" );
document.write( "x= +- the square root of 147/2 + 13/2 <BR>\n" );
document.write( "Is this right? I feel like I'm missing something or doing something wrong.<BR>\n" );
document.write( "Thanks for all of the help!<BR>\n" );
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document.write( "It's correct except for the -147/4<BR>\n" );
document.write( "Put the c on the right side early, makes it simpler.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+-+13x+-+5+=+0 ALIGN=MIDDLE  ALT=\"x%5E2+-+13x+-+5+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+-+13x+=+5 ALIGN=MIDDLE  ALT=\"x%5E2+-+13x+=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+-+13x+%2B+169%2F4+=+169%2F4+%2B+5+=+189%2F4 ALIGN=MIDDLE  ALT=\"x%5E2+-+13x+%2B+169%2F4+=+169%2F4+%2B+5+=+189%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x+-+13%2F2%29%5E2+=+189%2F4 ALIGN=MIDDLE  ALT=\"%28x+-+13%2F2%29%5E2+=+189%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+-+13%2F2+=+sqrt%28189%2F4%29+=+%283%2F2%29%2Asqrt%2821%29 ALIGN=MIDDLE  ALT=\"x+-+13%2F2+=+sqrt%28189%2F4%29+=+%283%2F2%29%2Asqrt%2821%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "etc </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );