$19\cdot3\cdot2$

$\left(\frac{x^3}{x^2}\right)^{-1}$

$\lim_{x\to\infty}\left(\frac{x-xln\left(x\right)}{4x^2+8x+2}\right)$

$3+2+5+3+2+7+1$

$\left(x^m-y^n\right)^4$

$sin\left(x\right)cos^3a-cos\left(x\right)sin^3\left(x\right)=\frac{1}{4}sin4\left(x\right)$

$4\left(x+5\right)-2x+34$