$$\left(x^3-8\right)\left(x-2\right)$$

$$y^2-2\cdot y.0+0^2$$

$$\lim_{x\to-\infty}\left(2ln\left(-x\right)+4x\right)$$

$$\int\left(x\cdot sqrt\left(12+2x\right)\right)dx$$

$$sin\left(x\right)cos^2\left(y\right)dx-cos\left(x\right)sin\left(y\right)dy=0$$

$$16x^6-2x^3y^2+y\frac{y^4}{16}$$

$$\left(2ysenx\cdot cosx+y^2senx\right)\cdot dx\:+\:\left(sen^2x-2ycosx\right)\cdot dy=0$$