$\left(x-60\right)\cdot\left(5\left(y-x\right)\right)+\left(y-70\right)\cdot\left(5\left(x-2y\right)+500\right)$

$\int\ln\:\left(\:x-2\right)\:dx$

$\tan^2\left(a\right)\cdot\csc^2\left(a\right)-\cos^2\left(2\pi\right)$

$m+0.47-0.4$

$\lim_{x\to9}\left(\frac{\sqrt{x}}{\left(x-9\right)^4}\right)$

$\left(\frac{24x^9y^4}{36x^8y^{10}}\right)^4$

$\left(12\right)^8$