Can someone help me out with this expression? How do I simplify it?

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I'm not quite sure since I suck at math but there is an app for ios called photomath that solves it for you and shows you the work.

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>>265469

>>265596
good try, but when you multiply by the conjugate you would have -3y on the bottom. you also dropped an exponent before and somehow after cancelling (you cannot cancel with your manipulation)

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>>265809 Is right.
Mine doesn't really simplify it, but gets roots out of the denominator.

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>>265816
Op here, sorry for giving you guys the wrong polynomial. It is actually (2x-3y)^3.
I made this based on your asnwers and i'd like to know if this is as simplest as this expression can get.

>>265901
probably, short of foiling the expression. Those square roots aren't going to go away.

>>266343
Well, I guess this is it.
Thanks alot to all you anons!