$$4y^3\cdot2x^2y^0$$

$$\int\:\frac{1}{\sqrt{\left(x+2\right)^2+25}}dx$$

$$\frac{x+6}{x-1}\le-5$$

$$\sin\left(80\right)\cos\left(35\right)-\cos\left(80\right)\sin\left(35\right)$$

$$xy\:dx+xy^2\:dy\:=0$$

$$\int6\sec^2\left(x-9\right)dx$$