$81 u ^ { 4 } - 18 u ^ { 2 } w ^ { 3 } + w ^ { 6 }$

$f\left(x\right)=\ln\left(e^{\sqrt{x}}\right)$

$\lim_{x\to1}\left(\left(x^2+2x-3\right)^3\left(x^3+2x-1\right)^2\right)$

$\lim_{x\to0}\left(\frac{ln\left(sin\left(3t\right)\right)}{ln\left(tan\left(2t\right)\right)}\right)$

$a\left(4+y+a\right)$

$x^2-2x-29>0$

$2=\sqrt[4]{4+3x}$