Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credit.
x2 + 2x + y2 + 4y = 20
Help me please I will give a medal and fan!!

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So far i have this
x2 + 2x + y2 + 4y = 20
(x2 + 2x) + (y2 + 4y) = 20

H!!

The radius is r = sqrt(25) = 5

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