Question

Evaluate: 2^3/(2^0 - 2^-1)

Answer 1

8 / (1 - 1/2)
= 8 / 1/2
= 16

Answer 2

okay thanks :) but how do you know that 2^-1 is = 1/2

Answer 3

a negative exponent means 1 / +ve
so 3^-1 = 1/3^1 = 1/3
3^-2 = 1/3^2

Answer 4

Okay :) I get it now. THanks :)

Answer 5

Also... do you know if I want to make the exponent -2^-1 apositive exponent and I flipped it to the top of the equation, would the two become positive????