$a^2-196b^2$

$\frac{125x^3\:+\:8y^6}{5x\:+\:2y^2}$

$\lim_{x\to+\infty}\frac{x+x^2\sin\left(\frac{1}{x}\right)}{1+x}$

$\frac{t^0u^0vw^{-1}}{\left(t^{-1}u^{-1}v^{-4}w\right)\left(t^{-6}u^{-9}v^8w^0\right)}$

$2\pi\frac{1}{2}$

$\frac{d}{dx}\left(arcsen\:y=\frac{1}{2}x^2+c\right)$