circle

Question: The equation of the circle which passes through the intersection of ${{x}^{2}}+{{y}^{2}}+13x-3y=0$ and $2{{x}^{2}}+2{{y}^{2}}+4x-7y-25=0$ and whose centre lies on $13x+30y=0$ is



1) ${{x}^{2}}+{{y}^{2}}+30x-13y-25=0$
2) $4{{x}^{2}}+4{{y}^{2}}+30x-13y-25=0$
3) $2{{x}^{2}}+2{{y}^{2}}+30x-13y-25=0$
4) ${{x}^{2}}+{{y}^{2}}+30x-13y+25=0$
Solution: Explanation: No Explanation
System of circles

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