Question

Simplify and express the result in power notation with positive exponent.

(i) (-4)5 ÷ (-4)8

(ii) ( 1/23)2

(iii) (-3)4 x (5/3)4

Answer 1

(i) (−4)5 ÷ (−4)8 = (−4)5 − 8 (am ÷ an = am − n)

= (− 4)−3 = 1/(-4)3 ( a-m = 1/am )