Respuesta :

The index form of the expression is 5^-1m

How to determine the index form

Note that index form means in a power form

We have that;

= 4m/20m

Find the similar factor

= 1/5m

The inverse of a number, is that number to the power of -1

Then,

1/5m = 5^-1m

Thus, the index form of the expression is 5^-1m

Learn more about index form here:

https://brainly.com/question/15361818

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