$\left(-11\right)^2\cdot7$

$\left(\frac{15}{\ln\left(x\right)}-\frac{15}{\left(x-1\right)}\right)$

$-89+\left(-1\right)$

$6^3\cdot1^4\cdot6^2\cdot1^5$

$\lim_{x\to2}\left(\frac{4-x^2}{3-sqrt\left(x^2+5\right)}\right)$

$\frac{20.1\sqrt{56}}{\left(2.65\right)^3}$

$\frac{x^2+x+4}{x^3-25x}$