$\lim_{x\to\infty}\left(\frac{8\ln\left(x\right)}{2x}\right)$

$\int_{\frac{\pi}{4}}^{\frac{\pi}{3}}\left(\frac{sinx}{cos^3x}\right)dx$

$x^3-11x^2+16+84$

$ab+mn-11ab-11mn+a-b+m-n$

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

$x^2y^{-4}x^3y^2$

$f\left(0\right)=\frac{0}{\left(1-0\right)^3}$