$\frac{20z^{6}u^{3}+12z^{6}v-25z^{6}u^{4}}{-4z^{4}u^{2}}$

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

$\lim_{x\to\infty}\left(\frac{log\left(log\left(n\right)\right)}{\left(log\left(log\left(log\left(n\right)\right)\right)\right)^8}\right)$

$50x^3-160x^2+128$

$4^58^2$

$sin\left(20\right)+cos\left(25\right)=23$

$9,8\cdot80$