Hello again; this two are the last probs for some time. As usual, please check my work.

The directions are: Rationalize the denominator.

So I multilply by the conjugate & simplify:

Now this beastly problem w/the same directions:

I thought to write it like this:

Then multiply the top and bottom by :

Does this look good? If you have another way that might be better, do say. Thanks once again!