$\frac{3}{4}m^2n\frac{6}{5}m^2n+\frac{8}{2}m^2n$

$\frac{1}{2}x-\left\{0,5-\left[0,25x-\left(\frac{1}{4}+x\right)\right]\right\}$

$\log_{0,25}\left(x\right)=\frac{5}{2}$

$\int_0^4\left(\frac{\left(1\right)}{x-6}\right)dx$

$121\:-264z\:-144z^2$

$\frac{\left(10x^2+40x+25\right)}{4x^3+26x^2+50x+20}$

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