what is 5 to the negative second power
if you mean 5^(-2) its 1/25
The way negative powers work:
Do the power as normal, then find the reciprocal of it (flip the fraction)
In this case, 5^-2, square it as normal to get 25. That is 25/1, flip it (reciprocal) to get 1/25. Any whole number is itself over 1.
actually its 0.04