Exponents equivalent

mic:

What is equivalent to 50(1/2)^t-2/5

Do you mean 50(1/2) ^t - 2/5? In which case it can be written as 50/2 ^t - 2/5 or 50*2 ^-t - 2/5, for example.

Or did you mean 50(1/2) ^t-2/5? In which case it can be simplified to 10/2 ^t-2 or 10*2 ^2-t, for example.

Or did you mean something else entirely?

Hi Mic,
You could take a look at this thread. It may well be useful to you.

http://web2.0calc.com/questions/negative-exponents-negative-indices