Question

What is the general form of the equation of a circle with center at (a, b) and radius of length m?
A) x2 + y2 − 2ax − 2by + (a2 + b2 − m2) = 0
B) x2 + y2 + 2ax + 2by + (a2 + b2 − m2) = 0
C) x2 + y2 − 2ax − 2by + (a + b − m2) = 0
D) x2 + y2 + 2ax + 2by + a2 + b2 = -m2

Answer 1

Well, what I have heard is that the general form is\[(x - a)^2 + (y - b)^2 = m^2\]Expand and fiddle around with it until you reach your answer.

Answer 2

A?