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Asked by vasavipanchakoti | 22 Mar, 2024, 08:16: PM
Expert Answer
Given circle is
x2 + y2 - 2x + 8y -23 = 0 \ \ \ ..................... (1)
Centre C and radius r of circle " x2 + y2 + 2gx + 2fy +c = 0 " are given by
C = ( -g, -f )
Centre of circle given by eqn.(1) is ( 1, -4)
power of point P (2 , 3 ) is ( PC )2 - r2
( PC )2 = (2 -1)2 + ( 3 +4 )2 = 50 ;
Power of point P(2,3) = 50 - 40 = 10
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