2^1 = 2 x 1 x 1 x 1 x 1 x 1 x 1... and so on
2^0 = 1 x 1 x 1 x 1 x 1 x 1 x 1... and so on
0^0 = 1 x 1 x 1 x 1 x 1 x 1 x 1... and so on

This is a simple way of explaining it.