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

$-7x\:\left(8x^2+2y-5z\:\right)$

$\int\frac{2x+1}{x^2+x+4}dx$

$\left(-74\right)\cdot\left(-17\right)$

$\int\left(\frac{x}{64-x^2}\right)dx$

$\int\frac{2x-11}{x^2+\left(x+2\right)}dx$

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