Question

I know the first one is right but id k if any of the other ones are

Answer 1

these are equivalent to
`4√(5)`:

`2√(20),\ \ 3*5^{(1)/(2)}+5^{(1)/(2)}, \ \ 4*5^{(1)/(2)}`

Answer 2

I think it the 3 and 4 one ... sorry if I’m wrong