document.write( "Question 399859: determine the equation of a circle with centre o(0,0)and point p(9,-4) on its circumference
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Algebra.Com's Answer #283151 by robertb(5830)\"\" \"About 
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\"x%5E2+%2B+y%5E2+=+9%5E2+%2B+%28-4%29%5E2+=+81+%2B+16+=+97\"
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