Trigonometry (11th Edition) Clone

$2i\sqrt 3$
Step 1: $\sqrt (-12)$ Step 2: $\sqrt (-1\times12)$ Step 3: $\sqrt -1\times\sqrt (12)$ Step 4: As $i=\sqrt -1$, the expression becomes $i\times\sqrt (12)$ Step 5: $i\times\sqrt (12)=i\times\sqrt (4\times3)=i\times\sqrt 4\times\sqrt 3=2i\sqrt 3$