# How do you find the center and radius for #x^2 + y^2 +2x -2y -14 = 0#?

##### 1 Answer

Aug 6, 2016

The circle has the center in

#### Explanation:

To find the center and radius we have to transform the equation to form:

#(x-a)^2+(y-b)^2=r^2 #

We start from:

We transform it to:

I added

From this equation we read that: the centre is