$$216.2x\left(14.2-3.2^2\right)+135.1$$

$$\left(\frac{3}{5}x^{-4}\:y^{-7}-\:\frac{1}{7}xy^{-1}\right)^2$$

$$\lim_{x\to0}\left(\frac{sen\:3x\:+\:ax\:+\:bx3}{x^3}\right)$$

$$\int2tan\left(10x\right)^5dx$$

$$y'=\left[\frac{1-y\left(t\right)}{2}\right]$$

$$4+1^4-1+2$$

$$\int\frac{s}{\left(s+1\right)\left(s-2\right)}dx$$