What is 12 3 cubed root by 2n0?

The expression "12 3 cubed root by 2n0" seems unclear. If you mean "12 times the cube root of 2 raised to the power of 0," then it simplifies as follows: the cube root of 2 raised to the power of 0 is 1, so the expression equals 12 times 1, which equals 12. If you meant something else, please clarify.