$$\left(7n+2m^5\right)\left(2m^5-7n\right)$$

$$\left(2x-1\right)\le3$$

$$\int t^6\ln\left(t\right)dt$$

$$4x^2+48+121$$

$$\lim_{x\to\frac{5}{2}}\left(5-2x\right)\tan\left(\frac{\pi x}{5}\right)$$

$$\lim_{x\to\pi}\left(\frac{3\left(1-\cos\left(x\right)\right)}{\left(x-\pi\right)\left(\tan\left(x-\pi\right)\right)}\right)$$

$$\left(5x\:+p\right)\left(5x-q\right)$$