Respuesta :

So the first step here is to square 121 which is 11. So therefore 11 to the power of 2 is 121. Reverse operation is key in this question or any question like this.
tramserran

Answer:  x = -11, x = 11

Step-by-step explanation:

   x² = 121

 [tex]\sqrt{x^2}=\sqrt{121}[/tex]

   x = ±11

  x = -11, x = 11