Question

The one who knows the answer will answer and also write how to solve so plz don't write anything it's not a joke. I will request brainly to block the person to block the person who will write anything in the greed of points.​

Answer 1

Answer:

4

$\sqrt{x + 12} = 4 \\ x + 12 = {4}^{2} \\ x = 16 - 12 \\ x = 4$