$$\int_0^{\infty}xe^{-e}dx$$

$$\frac{8x^4+2x^3+2x+2}{2x^2-1}$$

$$2574,458+147,367+0,468$$

$$\sqrt[5]{38-6}$$

$$\frac{4x^3-9x}{x\left(x-5\right)\left(2x+3\right)}$$

$$-\frac{3}{-1}$$

$$\int\left(\frac{9}{10}\sqrt{x}\right)\cdot\:\left(\sqrt{0.04x^{\frac{3}{4}}+4}\right)dx$$