A) \[2x+2y-1=0\]
B) \[2x+2y+1=0\]
C) \[x+y+7=0\]
D) \[x+y-7=0\]
Correct Answer: A
Solution :
Circles are, \[{{S}_{1}}={{x}^{2}}+{{y}^{2}}-3x-4y+5=0\] ..... (i) and \[{{S}_{2}}=2{{x}^{2}}+2{{y}^{2}}-10x-12y+12=0\] or \[{{S}_{2}}={{x}^{2}}+{{y}^{2}}-5x-6y+6=0\] ..... (ii) \[\therefore \] Equation of radical axis is \[{{S}_{1}}-{{S}_{2}}=0\] \[\Rightarrow \] \[2x+2y-1=0\].You need to login to perform this action.
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