$\lim_{x\to6}\left(\frac{ln\left(x-5\right)}{x-6}\right)$

$128,9\cdot0,01$

$8a^3b^4\left(3ab-2ab+4a^2b^2\right)$

$\left(45+\sqrt{25}\right)\left(45-\sqrt{25}\right)$

$\lim_{x\to3}\left(\left(\frac{9-\sqrt{3x}}{x-3}\right)\right)$

$\frac{\left(x^5+3x^3-x^2+1\right)}{\left(x^2-2x+1\right)}$

$3\cdot\left(2+3\right)$