document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=476800>Question 476800</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi I am having some difficulties with this problem. I hope you can help. Thanks in advance. \r<BR>\n" );
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document.write( "Find the center and radius of the circle whose equation is x2 + 10x + y2 = 75.\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
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document.write( "Find the center and radius of the circle whose equation is x2 + 10x + y2 = 75<BR>\n" );
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document.write( "x2 + 10x + y2 = 75<BR>\n" );
document.write( "completing the square<BR>\n" );
document.write( "(x^2+10x+25)+y^2=75+25=100<BR>\n" );
document.write( "(x+5)^2+y^2=100<BR>\n" );
document.write( "This is an equation of a circle of standard form: (x-h)^2+(y-k)^2=r^2, with (h,k) being the (x,y) coordinates of the center and r=radius.<BR>\n" );
document.write( "For given equation:<BR>\n" );
document.write( "Center:(-5,0)<BR>\n" );
document.write( "r^2=100<BR>\n" );
document.write( "r=10 (radius) </SPAN>\n" );
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