$\lim_{x\to5}\left(\frac{3x\left(x-1\right)^2\left(x-5\right)}{\left(x-1\right)\left(x-5\right)^2}\right)$

$\left(-\:363\right)\:-\:\left(\:-\:33\right)$

$\log x-\log5=\log7$

$12m+60m^2+75m^3$

$\left(4x^4\right)\left(2x^2+6x-3\right)$

$\lim_{x\to0}\left(\frac{\arcsin\left(\sqrt{x+1}-\sqrt{\cos\left(x\right)}\right)}{\tan\left(x\right)}\right)$

$\lim_{x\to1}\left(\frac{\ln\left(x\right)}{\sqrt[2]{x}}\right)$