Write 6 x 6 x 6 x 6 using exponents.

The expression 6 x 6 x 6 x 6 can be written using exponents as 6^4.

so 6 to the power of 4 or 4 to the power of 6

Yes, exactly! 6 to the power of 4 and 4 to the power of 6 both represent the expression 6 x 6 x 6 x 6.