$\frac{1m}{2}+\frac{2x}{3}-\frac{5}{4}x-2m$

$\lim_{t\to0}\frac{t^3}{\sin^23t}$

$\left(2a^{5}+3b\right)^{2}$

$\left(a+1\right)\left(a+2\right)\left(a-1\right)\left(a-2\right)$

$\frac{dy}{dx}=2xy-4x$

$\int\frac{x^2}{\left(x+2\right)^2\left(x+4\right)^4}dx$

$5+4+\left(-9\right)-5+3+\left(-2\right)-\left(-4\right)$