Question

se $\sqrt{x+2} =2$, entao (x+2)² equivale a;

Answer 1

V(x +2) = 2
V(x + 2)² = 2² 
x + 2 = 4
x = 4 - 2
x = 2 ****

logo
( x + 2)² = ( 2 + 2)² = 4² = 16 ***