Question

What number to the 4th power makes 256?

Answer 1

4x4x4x4=256 or √256=16 and √16=4 your answer is (+-) 4

Answer 2

We could work this out using log, but an easier way would be to find the square root of the square root.

Because of the way indices work, ((x)²)² = x⁴

so;

= √√256

= √16

= 4