$\left(-\:12\:700\right)\:+\:\left(-\:485\right)$

$-\sqrt{72}18\sqrt{100}-\frac{70}{9}8.25$

$\lim_{x\to0}\left(\frac{\sqrt{9x^6+2x^2+5}}{4x^2-1}\right)$

$-36+36-36$

$\log\left(0\right)+3$

$\frac{\left(x-4\right)}{\left(3x-2\right)}-1\le0$

$\int\:\frac{\left(x^2\right)}{\left(x^3+4\right)^5}dx$