Question

The center of circle (x+2)^2+(y-2)^2=9 is (-2,2) . TRUE OR FALSE ?!!

Answer 1

The standard formula of a circle:
$(x-h)^2+(y-k)^2=r^2$
r - a radius(h; k) - coordinates of a center
We have:
$(x+2)^2+(y-2)^2=9$
Therefore:
The center: (-2; 2)The radius: r² = 9 → r = √9 → r = 3
Answer: TRUE