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Asked by vasavipanchakoti | 22 Mar, 2024, 08:16: PM
answered-by-expert 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 )

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Centre of circle given by eqn.(1) is  ( 1, -4)

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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

Answered by Thiyagarajan K | 22 Mar, 2024, 11:12: PM
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