Question

formula of circles and system of circles​

Answer 1

Answer:

$\huge\fbox\red{A}\fbox\pink{n}\fbox\purple{S}\fbox\green{w}\fbox\blue{E}\fbox\orange{r}$

Let S = 0, S′ = 0 be two circles with centres c1, c2 and radii r1 , r2 respectively. ... If |r1 – r2| < C1C2 < r1+ r2 then the two circles intersect at two points P and Q. The chord PQ is called common chord of the circles.