Respuesta :

gmany

Answer:

[tex]\large\boxed{\sqrt{16}}[/tex]

Step-by-step explanation:

[tex]\sqrt{15}\ \text{is irrational number}\\\\\sqrt{21}\ \text{is irrational number}\\\\\sqrt{22}\ \text{is irrational number}\\\\\sqrt{16}\ \text{is rational number because}\ \sqrt{16}=4[/tex]

Answer:

[tex]\sqrt{16} = 4[/tex]

Step-by-step explanation: