Question 68822
{{{ 3  square root  of 8a^12 }}}.

Since it involves cube root, we are going to find prime factors of 8 and a^12 
8 = 2*2*2
  = 2^3
a^12 = a*a*a*a*a*a*a*a*a*a*a*a
     = a^3*a^3*a^3*a^3
     = (a^3)^4

Therefore the cube root of 8a^12 is 2a^4