Which expression results in a rational number?

1
Step-by-step explanation:
it will give u the correct number of it
Answer:
3) [tex]\sqrt{2}[/tex]·[tex]\sqrt{8}[/tex]
Step-by-step explanation:
[tex]\sqrt{2}[/tex]·[tex]\sqrt{8}[/tex]= [tex]\sqrt{16}[/tex]=4 (rational number)