We all know that any number or variable raised to the zero power equals 1

and that any number or variable raised to the 1st power equals the number or variable.

SAMPLE A:

x^0 = 1 as well as 100^0 = 1

SAMPLE B:

x^1 = x as well as 100^1 = 100

Why is this the case?

Can anyone explain, in simple terms, theconcerning the above?WHY