Indices law - law 2

`a^-n=1/a^n`

A negative is divide

To remember this put simple numbers in. ie Try simple numbers you know first.

`2^-2=1/2^2=1/(2times2)=1/4=0.25`

`2^-1=1/2=0.5`

Also try other examples you know like starting with `10^2` and remove `1` from the power and understand the answer you get:

Remove 1 from the power and the answer gets smaller and smaller

Examples

1. `5^-3` is the same as `1/5^3`

2. `x^-3` is the same as `1/x^3`