Question

Can someone help me please? I don't know how to do this problem, could someone explain step by step? It would be greatly appreciated. I've also included 15 points to whoever answers this.

Answer 1

See picture for answer

Answer 2

Root 12 can still be simplified because its prime factors are 2, 2, and 3.
Take the 2's out to get 6(2)root 3.
6*2=12 so that simplifies to 12 root 3
Now just subtract 12 root 3 and root 3
This leaves you with eleven root 3
Final answer: C