question_answer

The centre of circle inscribed in square formed by the lines \[{{x}^{2}}-8x+12=0\]and \[{{y}^{2}}-14y+45=0\], is  [IIT Screening 2003]

A)            (4, 7)                                         

B)            (7, 4)

C)            (9, 4)                                         

D)            (4, 9)

Correct Answer: A

Solution :

           Centre is (4, 7).