$3\sqrt{3375}$

$3\cdot\tan\left(a\right)+\sqrt{3}=0$

$a^2\:-\:b^2\:=\:\left(a+b\right)\:\left(a-b\right)$

$\log_f\left(125\right)=3$

$\left\{4.\left[5-7.\left(-3\right)-\left(5-3\right)\right]\right\}+\left\{-\left[12+\left(5-9\right).4\right]-\left[\left(5.\left(-6\right)\right)\right]+15\right\}$

$14-\left(-10\right)$

$v-6=-3$