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

I don't know it this helps but I hope so, I used photo math!!

The circle is of radius and is centered at .

Step-by-step explanation:

Equation for a circle of radius () and center :

.

Expand and rearrange to obtain an equivalent equation:

.

.

Compare this equation with the equation of the circle in this question:

Assume that the proposed equation matches the equation from the question. Each of the coefficients should match.

From the coefficient of the term and the term: and .

Hence, the center of this circle is at .

The constant term of the two equations should also match: .

.

.

(given that radius .)

Hence, the radius of this circle would be .

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step-by-step explanation:

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step-by-step explanation: