Question

1.〖3 x 4〗^(-2)
2. 4/b^(-6)
3. (1 )/2 4^(-2)
4. 1/5^(b-4)

Answer 1

1. (12)^-2 = 1 per 12^2 = 1 per 144
2. 4/b^-6 = 4b^6
3.  no. 3 kurang jelas pertanyaannya, 1/2 x 4^2 ?
4. (1/5)^(b-4) = 1^{b-4} / 5^{b-4} = 1^{b-4} x 5^ -(b-4) = 1^ {b-4} x 5^{-b+4}