$\lim_{x\to\infty}\left(\frac{3x^2-x}{x^2+1}\right)$

$\tan\left(x-180\right)$

$\left(y^2+6y^3-8\right)-\left(2y^4-3y^3+6y\right)$

$\frac{dy}{dx}\left(\frac{x\sqrt{x^2+5}}{\left(x+2\right)^{\frac{1}{3}}}\right)$

$\frac{dx}{dp}+\frac{2}{p}=\frac{1}{p^2}$

$2^{3x+1}=128$

$\left(a^3b+ab^4\right)^2$