# The equation #3x^2 +2y^2 +2x -5y -6 = 0# does not represent a circle. How can you tell this by looking at the equation?

##### 1 Answer

Aug 16, 2016

not the same coefficient

#### Explanation:

The equation of the circle in the standard form is the following:

that is reachable if the terms of degree 2 have the same coefficient, but in the given equation they are different: 3 for