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

$\frac{dy}{dx}\left(ln\left(cosh\left(5v\right)\right)-\frac{1}{2}tanh^2\left(5v\right)\right)$

$8z+10z$

$\frac{\left(50+30\right)}{4}$

$\left(5a^3y^6-8a^4y\right)\left(5a^3y^6+8a^4y\right)$

$\lim_{n\to\infty}\left(n^n\right)$

$7x+3\left(x-12\right)+x+6$