How to evaluate a number with a negative fraction exponent?

To evaluate a number with a negative fraction exponent, you need to take care of two things.
1) The negative exponent.
2) The fraction as an exponent.

1) Negative exponent



2) Fractional exponent



Example:

Evaluate



First, take care of the negative exponent.



Now we take care of the fractional exponent by using a root.

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)