$\lim_{x\to n}\left(\frac{\left(8x\right)}{\ln\:\left(n\right)+3n+7}\right)$

$\frac{2x^3-3x^2-5x+1}{x-2}$

$\log\left(x-2\right)-\log\left(2x-3\right)=\log2$

$\int_{\frac{\pi}{4}}^{2\pi}\left(sec^2x\right)dx$

$-5\left(2x-7\right)-4x+10$

$\left(\frac{1}{4}x\:-\:8y\right)^2$

$\left(a^2-2a+4\right)\left(a^2+2a+4\right)$