$\lim_{x\to\infty}\left(\frac{8x^2+5x}{e^x}\right)$

$\left(\frac{1}{3}a-3\right)^3$

$3x+2y-5=0$

$\lim_{x\to-6}\left(\frac{\left(t^3-4t+192\right)}{\left(t^2-t-42\right)}\right)$

$\frac{y}{x^2}=10$

$\left(2y-1\right)\left(3x+2\right)$

$\int\left(\frac{1+\cot^2x}{\cot^2x}\right)dx$