Is the following equation quadratic

[Guest]

is x^2=5y +2 quadratic equation or not

[Guest]

This is not a quadratic equation and a quadratic function
[tex]y = \frac{1}{5}x^2 - \frac{2}{5}[/tex]

Quadratic equations are in the form of
[tex]ax^2+bx+c = 0[/tex]
where a, b and c are numbers.
We have no second variable.