Please show step-by-step how I am supposed to solve these types of problems.

1. 4ab^0

2. 5x^-4

3. (3x^-2)/y

1 answer

zero exponent is always 1: 5^0 = 1
negative exponents switch between top and bottom.
x^-4 = 1/x^4
1/x^-4 = x^4

4ab^0 = 4a(1) = 4a

5x^-4 = 5/x^4

3x^-2 / y = 3/(x^2 y)