$$\lim_{x\to\infty}\left(\frac{sen\left(\frac{1}{y}\right)}{arctan\left(\frac{1}{y}\right)}\right)$$

$$8\times9\times-5$$

$$am-an+ap$$

$$15x+15xy$$

$$\int\left(5x+3\right)^3dx$$

$$34pq^2+51p^2\:q+68p^3\:q^3=\:$$