Question

raíz cuadrada de (x+4):5 = 3

Answer 1

√[(x +4)/5] =3
(√[(x +4)/5])² = 3²
(x + 4) = 9*5
x = 45 -4
x = 41

Comprobacion

√[(x +4)/5] = 3
√[(41 + 4)/5] = 3
√(45/5) = 3
√9 = 3
3  =  3