$\lim_{x\to\infty}\left(1+\frac{12}{x}\right)^{\frac{x}{1}}$

$t^3-2t$

$\left|-15\right|\left|-15\right|-\left|14\right|$

$\lim_{x\to0}\left(\frac{x^3+1}{x-1}\right)$

$\lim_{x\to\infty}\left(\frac{150\cdot x}{x+5}\right)$

$\left(y+8\right)\left(-8\right)$

$-a-5b;a=4;\:b=3$