Respuesta :
Even they are repeated, the last two questions are the correct ones. It can not be the other options cause the expression is not rational because:
√32=√(16*2)=4√2
4√2 + √2=5√2
That is why is irrational
√32=√(16*2)=4√2
4√2 + √2=5√2
That is why is irrational