$-43+\left|-37\right|$

$\lim_{x\to0}\left(\frac{x^2}{1-x^3}\right)$

$\lim_{x\to1}\left(x-1\right)\cdot ln\left(x-1\right)$

$\left(a+2\right)+\left(a+1\right)\left(a+2\right)$

$x^2+13x+42=0$

$\left(100x^2-60xy\right)\left(9y^2\right)$

$sin\left(\frac{5\pi}{3}+x\right)$