SOLUTION: Find the equation of a circle: center(-2,0):passes through(2,0)

SOLUTION: Find the equation of a circle: center(-2,0):passes through(2,0)

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Question 262828: Find the equation of a circle: center(-2,0):passes through(2,0)
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
The equation of a circle can be expressed as

we know the center, so we have

the distance from the center to the point on the circle is 4. This is also called radius. SO, we get

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