4
They are equal 2^4 and 4^2 both equal 16.
5 to the 2nd power, written as (5^2), is equal to 25. This is calculated by multiplying 5 by itself: (5 \times 5 = 25).
25
4.2 to the 2nd power is equal to 17.64 while 10 to the 2nd power is equal to 100. The latter is larger.
25^2 =625 Use Google next time. Search: 25^2
16
2 to the power 0 or 20 is equal to 1
2 to the power of -2 is equal to 1/4.x to the power of -y is equal to 1/xy.
798.6276
8 and 8.
The result is 117,649
2 to the power of 2 equals four.