Need help!! Pls explain

Answer:
The answer to your question is: the last option 10m√3xm
Step-by-step explanation:
5√(12xm³)
First, find the prime factors of 12
12 2
6 2
3 3
1 then, 12 = 2 x 2 x 3 = 2² x 3
and m³ = m x m x m = m² x m
Substitution
5 √ (2² 3x m² m)
5(2)(m) √3xm
10m√3xm