Rationalization :O (1 Viewer)

[kazemagic]

I never came across rationalizing 3 numbers in a denominator lol :O O_O How do you do this?
Thanks

 

[Carrotsticks]

Group two (any two will do) of them and rationalise one of them out, then do it again.

 

[kazemagic]

Thanks Carrot, but I don't think I quite get you.
Is the answer (-root2-root10+root3-root15)/-4 ?

 

[Carrotsticks]

 

[kazemagic]

Ohh alright, once again, thanks carrot!

 

[Demento1]

Yes, I got the answer. Thank you carrotsticks