Respuesta :

Answer:

[tex] x = \pm\sqrt{y + 12}[/tex]

Step-by-step explanation:

[tex]y = {x}^{2} - 12 \\ y + 12 = {x}^{2} \\ \pm\sqrt{y + 12} = x \\ x = \pm\sqrt{y + 12} \\ is \: the \: required \: inverse \: function[/tex]