circle

Question: If ${{x}^{2}}+{{y}^{2}}+px+3y-5=0$ and ${{x}^{2}}+{{y}^{2}}+5x$ $+py+7=0$ cut orthogonally, then p is

1) $\frac{1}{2}$

2) 1

3) $\frac{3}{2}$

4) 2

Solution:

Explanation: No Explanation

System of circles

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