document.write( "Question 374781: what is the standard form, radius, and center of this circle equation: x^2+y^2-2x+6y-15=0 \n" ); document.write( "

Algebra.Com's Answer #266568 by Fombitz(32388) $\"\"$ $\"About$

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Complete the square in x and y.
\n" ); document.write( " $\"x%5E2-2x%2By%5E2%2B6y-15=0\"$
\n" ); document.write( " $\"%28x%5E2-2x%2B1%29%2B%28y%5E2%2B6y%2B9%29-15=1%2B9\"$
\n" ); document.write( " $\"%28x-1%29%5E2%2B%28y%2B3%29%5E2=10%2B15\"$
\n" ); document.write( " $\"highlight%28%28x-1%29%5E2%2B%28y%2B3%29%5E2=25%29\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "( $\"h\"$ , $\"k\"$ )=( $\"1\"$ , $\"-3\"$ )
\n" ); document.write( " $\"R=5\"$ \n" ); document.write( "

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