I want to check my answers

In the first on I just got rid of the sqrtx in the denominator of the numerator.

And in the last one I expanded the bottom and collected the y^2 terms.

That is all.  :)

The first one looks good.....I'll look at the others as I get to them......

The second is OK, too.....

Yeah.....the last one is OK, too.......a lot of "messy" Algebra in that one, huh???

Yes, i think the first 2 look good but the second one i simplified a little further.

I haven't done the third one yet.

Again, my  answer is the same as yours for the third one but I would have gone one more step :)

Thank you Chris and Melody 

Melody Can you show me your simplification ? 

Nice , thank you