Question

Find the equation of the circle passing through P(1,1), Q(2,-1) and R(3,2)​

Answer 1

Answer:

x^2 + y^2 - 5x - y + 4 =0

Step-by-step explanation:

eqn of circle,

x^2 + y^2 + 2gx + 2fy + c =0

1 + 1 + 2g + 2f + c =0

2g + 2f + c = -2

4 + 1 + 4g -2f +c = 0

9 + 4 + 6g + 4f + c =0

solve these three eqns.. u will get the answer