document.write( "Question 555079: Identify the conic section. If it is a parabola, give the vertex. If it is a circle, give the center and radius. If it is an ellipse or a hyperbola, give the center and foci.\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "x^2+y^2+8x-4y=-11\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "a)circle; center (–4, 2); radius = 9\r
\n" ); document.write( "\n" ); document.write( "b)circle; center (4, –2); radius = 9\r
\n" ); document.write( "\n" ); document.write( "c) circle; center (–4, 2); radius = 3\r
\n" ); document.write( "\n" ); document.write( "d) circle; center (4, –2); radius = 3
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #361621 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Identify the conic section. If it is a parabola, give the vertex. If it is a circle, give the center and radius. If it is an ellipse or a hyperbola, give the center and foci. \r
\n" ); document.write( "\n" ); document.write( "x^2+y^2+8x-4y=-11
\n" ); document.write( "-------------
\n" ); document.write( "Complete the square.
\n" ); document.write( "\"x%5E2%2By%5E2%2B8x-4y=-11+\"
\n" ); document.write( "\"x%5E2%2B8x%2B16+%2B+y%5E2-4y%2B4+=+9\"
\n" ); document.write( "\"%28x%2B4%29%5E2+%2B+%28y-2%29%5E2+=+3%5E2\"
\n" ); document.write( "It's c.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );