Respuesta :

Answer:

x [tex]\geq[/tex] 4

Step-by-step explanation:

4x^2 - 64 [tex]\geq[/tex] 0 ; move 64 over

4x^2 [tex]\geq[/tex] 64 ; divide by 4

x^2 [tex]\geq[/tex] 16 ; take square root of both sides

x [tex]\geq[/tex] 4