# Is #y=x^2 + 2x-3# a quadratic?

##### 1 Answer

Jun 22, 2015

Yes, it is a quadratic function

#### Explanation:

To find if a function (or equation) is a quadratic one you have to check if the function is a polinomial (it contains only of terms like

**Examples:**

1)

2) **not** quadratic (no

3)

4)