Question

How do you simplify `4^(1/2)+9^(-1/2)`?

Answer 1

`2""1/3""or""7/3`

Explanation:

from the rules of indices we have

`x^(1/2)=sqrtx." "x^(-1/2)=1/sqrtx`

`4^(1/2)+9^(-1/2)=sqrt4+1/sqrt9`

`=2+1/3`

`=2""1/3=7/3`