$$\int\frac{3}{\left(9\right)x^2+1}dx$$

$$x^{2a}+x^{2a}$$

$$\frac{x^3+3x^2-5x+7}{x^2}$$

$$\int\left(\frac{\left(3x^3+2x^2+8\right)}{x^2}\right)dx$$

$$\left(7r^4-q^2\right)^3$$

$$5ax^2+10ax-7a^2x-16ax^2$$