$$\int\frac{x^{2}+5x-8}{\sqrt{x}}dx$$

$$\left(2x+-6+y\right)-\left(12x^2-6xy+24^2\right)$$

$$\left(\frac{1}{2}m^3-5n^4\right)^3$$

$$-x+x^2+2x^2-y$$

$$7-4k+k$$

$$-y+6y^2+3y^2+5y+4y+3-1$$