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

$\left(12+\cot\left(x\right)\right)\left(12-\cot\left(x\right)\right)+\csc^2\left(x\right)$

$15\cot x+17\cos x$

$\int ye^{y^2}du$

$\frac{d}{dx}\left(\frac{\left(\left(7x-4\right)\left(3x+5\right)^{\frac{1}{2}}\right)}{8x-6}\right)$

$\left(-2\right)-\left(-2\right)^2+3$

$-\left(-2\right)-\left(-8\right)$