The equation of a circle is given below. identify the radius and center.
x^2 + y^2 + 6x -8y +21 = 0

The center is: and the radius is

Step-by-step explanation:

The general equation of a circle has the following formula:

Where r is the radius of the circle and (h, k) is the center of the circle

In this case we have the following equation

To find the radius and the center of this cicunference we must rewrite the equation in the general form of a circumference completing the Square

Then the center is: and the radius is

center -

center -

5 pm

step-by-step explanation: