$\lim_{x\to\infty}\left(\left(x\right)\sin\left(\frac{\pi}{x}\right)\right)$

$\int\frac{x^2}{\sqrt{2-3x}}dx$

$\lim_{x\to\infty}\left(x\:sin\left(\frac{8\pi}{x}\right)\right)$

$425x+119y=136$

$4x^2-7x-4$

$\int\frac{4y^3+y+1}{\left(y-1\right)\left(y^2+y+1\right)}dx$

$z^2+24z$