$\frac{-24}{-6}+\left(-4\right)\times3$

$8\cot\left(90\right)+6\sin\left(270\right)+8\cos\left(0\right)^2$

$\int_2^4\left(\frac{3}{\left(x-2\right)^2}\right)dx$

$\frac{d}{dx}\left(x^3+3x^2y+y^3=4\right)$

$\sqrt{x^2-x}-x$

$\lim_{x\to0}\left(\frac{\cos\left(x\right)-1}{e^x-x}\right)$

$100+66+24+90$