Respuesta :

Answer:

30

Step-by-step explanation:

If x = 3, then

x³ + x = 3³ + 3 = 27 + 3 = 30

hkh91

[tex] {x}^{3} + x \\ = {3}^{3} + 3 \\ = 27 + 3 \\ = 30[/tex]

30 is the answer