Question

Rewrite the expression using positive exponents
1. 1/9x^-2y^-1

2. a^-5*a^-8

Answer 1

Property : a^-b = 1/a^b

Using this property, we can rewrite the expression using positive exponents :

`1. (1)/(9)*x^(-2) *y^(-1) =(1)/(9)(1)/(x^(2) ) (1)/(y) =(1)/(9x^(2) y) \\2. a^(-5) a^(-8) =(1)/(a^(5)a^(8) ) =(1)/(a^(13) )`