$3x+5+y+12+2x+x+3+4y$

$\left(3a^2b^5c\right)^3$

$9,4\:\cdot2$

$\lim_{x\to\infty}\left(\frac{x}{\ln\left(x^6\right)}\right)$

$\cos\left(x\right)=0.55$

$\int1+\frac{2}{y}dy$

$\frac{cos\left(\infty\right)}{1-sin\left(\infty\right)}=\frac{1+sin\left(\infty\:\right)}{cos\left(\infty\right)}$