Hello there!
5^-9
The Law of Negative Exponents states that if we have a number with a negative exponent, we flop it over.
Now, what am I talking about? Let's see..
We have 5^-9.
Now, we turn it into a fraction:

1 belongs in the numerator. After entering 1, enter 5 and then, enter 9.
Hope this helps you!
~Just a joyful teen
