# How do you find the center and radius for #21y^2+19x^2+83=4x−2x^2−84y#?

##### 1 Answer

Aug 22, 2016

#### Answer:

The center of circle is

#### Explanation:

The equation of a circle is of the type

Here equation is given to be

Hence center is

=

=

=

=

Hence the center of circle is