$\lim_{x\to0}\left(\frac{\ln\left(x\right)-x+x^2}{\left(1-x\right)\cdot\ln\left(x\right)}\right)$

$\frac{8x^410x^2+7x}{4x^2+2x+3}$

$\int\left(\cos\left(m\right)\right)\left(3m^2\right)dm$

$\left(5\:-\:2\right)\left(9\right)$

$\int^3\left(y-2\right)^2dx$

$x+2x+3x$

$\left(4ax-b^2\right)^2$