$\left(-3\right)+\left(-9\right)-\left(-4+11+6\right)$

$e^y\frac{dx}{dy}=3x^2+1$

$\frac{d}{dx}\left(5^{xy}-10y=\tan\left(8x\right)\right)$

$\lim_{x\to-2}\left(\frac{4-x^2}{3-\sqrt{x^2-4}}\right)$

$x^2+8x-125$

$\int_0^{\pi}\left(\cos x-\sin x\right)dx$

$\int_0^2\left(\frac{\left(\sqrt{x}+8\right)^2}{12\sqrt{x}}\right)dx$