Could someone show me how to work out these please
1. The circle x^2(y+3)^2=25 meets the x axis at p and q, find the coordinates of p and q?
2. The points A(7,4) B(8,-7) and C(-4,3) lie on a circle. Find the equation of the circle?
3. Find the equation of the tangent at the point (3,1) on the circle
Thanks for your help