For example, how to calculate when the index is negative and fraction

For example, how to calculate when the index is negative and fraction

It's hard to say that knowledge based on theory
Let's take an example
For example, 4 ^ 2 = 16
And 4 ^ - 2 = 1 / 16
That is to say, when the index is negative
In this way, the negative sign is removed, and then the exponent is positive
Fractions are simple. For example, 4 ^ 1 / 2 = root 4, 4 ^ 3 / 4 = (square root 4)
That is to say, the power of the denominator of the exponent is multiplied by the power of the numerator
It's troublesome to express, and I'm not good at language
Do you understand?

If 2 / 1 x ^ 2m + 1-8 > 5 is a linear inequality with one variable, then M=

Because it is a power, 2m = 1, M = 0.5

If - 2x ^ M-1 is greater than 5, then the value of M is?

The degree of X is 1
So M-1 = 1
m=2