$\lim_{x\to0}\left(\frac{8cosx+8}{\left(x+\pi\right)^2}\right)$

$6m-9m-6m$

$1,5^{-\infty}$

$\left(4x^2z^2+3\right)\left(3xy\right)$

$\left(a^2+b^2+c^2\right)^2\left(a+b+c\right)\left(a^8+b^8+c^8\right)$

$5x\:-\:6\:=\:19$

$\int\frac{4x^2+13x+9}{x\left(x+3\right)^2}dx$