S.5 數學 points of intersection.

Do the circle (x+a)^2 + (y-b)^2 = a^2 + sb^2 (where a>0, b>0)
and the intersect at two distinct points?

立果2條式
一條係樓上果條
仲有一條係乜? 詳細列明點解

THANKS ^^ !!!!!