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Let phi(x,y)=0 be the equation of a circ...

Let `phi(x,y)=0` be the equation of a circle. If `phi(0,lamda)=0` has equal roots `lamda=2,2fandphi(lamda,0)=0` has roots `lamda=(4)/(5),5` then the centre of the circle is

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Let f(x,y)=0 be the equation of a circle. If f(0,lamda)=0 has equal roots lamda=2,2 and f(lamda,0)=0 has roots lamda=(4)/(5),5 then the centre of the circle is

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