Using the following equation, find the center and radius of the circle. you must show all work and calculations to receive credit.
x2 − 4x + y2 + 8y = −4
don't use a lot of words. it makes it hard to understand. everyone!

And if we compare this to the general equation for a circle:

We see that the radius is and the center would be

Step-by-step explanation:

For this case we have the following equation:

We need to complete the square for x and y like this:

And simplifying we got:

And if we compare this to the general equation for a circle:

We see that the radius is and the center would be

1e+27

step-by-step explanation: