circle

Question: If P is a point such that the ratio of the squares of the lengths of the tangents from P to the circles ${{x}^{2}}+{{y}^{2}}+2x-4y-20=0$ and ${{x}^{2}}+{{y}^{2}}-4x+2y-44=0$ is 2 : 3, then the locus of P is a circle with centre



1) (7, – 8)
2) (– 7, 8)
3) (7, 8)
4) (– 7, – 8)
Solution: Explanation: No Explanation
System of circles

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