I need help with this problem.

I think that you have already been given the answers to many of these. 

So it is time for you to start learning how to do them.

 

I will give you some examples that will help.

 

\(5^{1/2}=\sqrt5\\ 7^{-3}=\frac{1}{7^{+3}}\\ \\~\\ 8^{3/2}=(8^3)^{1/2}=(8^{1/2})^3\)

 

 

Now think about it and you tell me what  these are equal to.

 

\(1) \;\; 2^{-1/2}\\ 2) \;\; 2^{-3/2}\\ and \\ 3) \;\;b^{1/2}\)

 

 

Please no one answer over me