$$\int\left(3x^2+6x+3\right)e^{2x}dx$$

$$\left(\frac{2a^4b^3}{3a^7b}\right)^{-3}$$

$$8 x ^ { 3 } + 4 x ^ { 2 } + 2 x - 4$$

$$\left(x+6\right)\left(3x+1\right)$$

$$\int\frac{6e^{6t}}{2+e^{6t}}dt$$

$$16y^2\:+\:12y$$

$$\int\frac{3x^3+5x}{x^2+x-2}dx$$