$\int3a^{-4}\left(2+4a^{-3}\right)da$

$\lim\:_{x\to01}\:\:\sin\left(x\right)\cdot\ln\left(x\right)$

$\left(5+2i\right)\cdot\left(-5-i\right)$

$\lim_{x\to5}\left(\frac{\left(x-1\right)\left(x-5\right)}{x-5}\right)$

$\int\left(x^2\left(x-2\right)^{\frac{3}{2}}\right)dx$

$-4x+6y-2+5x-5y+2$

$4^2+6a+9$