document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=781417>Question 781417</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the center and radius of the circle defined by the equation:\r<BR>\n" );
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document.write( "X^2+Y^2+4X-8Y+13=0\r<BR>\n" );
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document.write( "Please!! Help!\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #475909 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=475909\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You want the equation in a form, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2 ALIGN=MIDDLE  ALT=\"%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > in which the center is (h,k) and radius is r.  This is a Complete-the-Square problem.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2By%5E2%2B4x-8y%2B13=0 ALIGN=MIDDLE  ALT=\"x%5E2%2By%5E2%2B4x-8y%2B13=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%2B4x%2By%5E2-8y%2B13=0 ALIGN=MIDDLE  ALT=\"x%5E2%2B4x%2By%5E2-8y%2B13=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The  terms with x need <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284%2F2%29%5E2=4 ALIGN=MIDDLE  ALT=\"%284%2F2%29%5E2=4\"   DISABLED_style= \"max-width:90%; height:auto;\" > and the terms with y need <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-8%2F2%29%5E2=16 ALIGN=MIDDLE  ALT=\"%28-8%2F2%29%5E2=16\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2%2B4x%2B4%29%2B%28y%5E2-8y%2B16%29%2B13=4%2B16 ALIGN=MIDDLE  ALT=\"%28x%5E2%2B4x%2B4%29%2B%28y%5E2-8y%2B16%29%2B13=4%2B16\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B2%29%5E2%2B%28y-4%29%5E2%2B13=20%0D%0A%7B%7B%7Bhighlight%28%28x%2B2%29%5E2%2B%28y-4%29%5E2=7%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(x+2)^2+(y-4)^2=7\r<BR>\n" );
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document.write( "Center: (-2,4)<BR>\n" );
document.write( "Radius: sqrt(7) </SPAN>\n" );
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