$\left(12^5\right)^{26}$

$\cos\left(-360\right)+\tan\left(720\right)$

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

$\lim_{x\to\infty}\left(1+\frac{2}{n}\right)^n$

$21-\left(-16\right)$

$x^2+9x-10$

$\left(-23\right)-\left(-56\right)-\left(-32\right)-\left(-45\right)$