$\sqrt[3]{a}-3a^{\frac{1}{3}}+\sqrt[3]{\frac{a}{8}}$

$\int\frac{1}{\left(x^2-1\right)\left(x+1\right)\left(x-1\right)}dx$

$2\:\left(x+3\right)-x$

$\frac{8x^4+2^3+x^2}{2x^2+x}$

$0,08+0,12$

$\int\left(\left(x-3\right)\left(6x+4\right)\right)dx$

$3b^4c-18b^3c^2+27b^2c^3$