$\left(-x-y-z\right)^3$

$1015\:x\:-5$

$\lim_{x\to0}\left(\frac{e^x\sin\left(x-x-x^2\right)}{x^2+x\ln\left(1+x\right)}\right)$

$24y-9$

$\left(\frac{7}{4}\right)\left(\frac{4}{7}\right)$

$\lim_{x\to0}\left(x\cdot cotg\:\left(\frac{\pi}{2}\right)\right)$

$1+\frac{1}{1+\frac{x}{1}}$