$\frac{x^7+x^3+140}{x-2}$

$\left(\frac{3}{4}x^2y^4\right)por\left(-\frac{5}{4}x^5yz\right)$

$cotx-1=cosx\left(cscx-secx\right)$

$\int\:\frac{1}{1+\sqrt{3x}}dx$

$\frac{\left(x^2+5x+6\right)}{x^2+6x+9}$

$288+2\cdot25\cdot\left(-3\right)^0+35\cdot2^2-1500\cdot\left(-5\right)^0\cdot2^0\cdot\left(-3\right)^0$

$-396,01+-338,56+-342,25+-372,49+-345,96+-338,56+-392,04+-384,96+-392,04$