document.write( "Question 1121380: Find the center and radius of the following circle:
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document.write( "x2 + y2 - 12x + 8y - 29 = 0 \n" );
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Algebra.Com's Answer #737252 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Find the center and radius of the following circle: \n" ); document.write( "x2 + y2 - 12x + 8y - 29 = 0 \n" ); document.write( "----- \n" ); document.write( "Complete the square for x and for y. \n" ); document.write( "x^2 - 12x + y^2 + 8y - 29 = 0 \n" ); document.write( "x^2 - 12x + y^2 + 8y = 29 \n" ); document.write( "x^2 - 12x + 36 + y^2 + 8y + 16 = 29+36+16 = 81 \n" ); document.write( "(x-6)^2 + (y+4)^2 = 9^2 \n" ); document.write( "=============== \n" ); document.write( "(x-h)^2 + (y-k)^2 = r^2 is a circle - center at (h,k), radius r \n" ); document.write( " |