document.write( "Question 861325: Factor to find the center and radius of the given equation:
\n" ); document.write( "a) x^2+y^2-8x=65
\n" ); document.write( "I understood how to solve this question and it came out to (x+4)^2+y^2=81
\n" ); document.write( "r=9 and (h.k)=(4,0)
\n" ); document.write( "My question is how to solve this next one.
\n" ); document.write( "b) x^2+y^2-4x+14y=-17
\n" ); document.write( "I don't understand why there is a \"14y\" and what I am suppose to do with it.
\n" ); document.write( "I first began by subtracting 10 from \"14y\" and \"-17\" and it came out to
\n" ); document.write( "(x+2)^2+(y-2)^2=-27. I don't believe it is correct though because I cannot square -27 to get the radius. Should I add 50 to both sides instead to receive 47 as the radius? So confused...
\n" ); document.write( "

Algebra.Com's Answer #518946 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
x^2+y^2-4x+14y=-17\r
\n" ); document.write( "\n" ); document.write( "x^2-4x+y^2+14y=-17
\n" ); document.write( "complete the square for x and for y\r
\n" ); document.write( "\n" ); document.write( "x^2-4x+4+y^2+14y+49=-17+4+49
\n" ); document.write( "(x-2)^2+(y+7)^2=36 \r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );