Respuesta :

Answer: 6 guess

Step-by-step explanation:

Sqrt 84

Answer:

2[tex]\sqrt{21}[/tex]

Step-by-step explanation:

[tex]10^{2}[/tex] - [tex]4^{2}[/tex] = 84

[tex]\sqrt{84}[/tex] = 2[tex]\sqrt{21}[/tex]