Algebra Examples

$\tan (x) + \tan (2 x) = 1 - \tan (x) \tan (2 x)$

The provided equation is not an identity.

$\tan (x) + \tan (2 x) = 1 - \tan (x) \tan (2 x)$ is not an identity

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$