Respuesta :

If you mean x^2 then there would be no answer after all, 3^2= 9 and 4^2= 16 so

If you mean 2x then the answer would be 5

Hope I helped?
If you mean:

x² = 10
√x² = √10
x = √10

if you meant:

2x = 10
2x/2 = 10/2
x = 10/2
x = 5

hope this helps