<PRE><B>Question 68822</B>
I think you mean:
:
CubeRt(8*a^12)
:
Think of this as factored to
:
CubeRt[2*2*2*a^4*a^4*a^4]
:
Extracting the cube root gives you:
:
2*a^4
:
Did this help you understand this?</PRE>