$$9m^2+12m+4m^2$$

$$\int cos2x\:cos7x\:dx$$

$$\int\frac{11}{3-7x}dx$$

$$9\left(4x^2+9\right)$$

$$\left(y+1\right)\left(y-4\right)$$

$$\lim_{x\to0}\left(\frac{\sqrt{4-x^2}-x}{x}\right)$$

$$ln\left[\frac{x^2-x-6}{\left(x+7\right)^3}\right]^{\frac{1}{5}}$$