Start by remembering that the square root symbol gives the non-negative root. The equation says that √(x - 2) is 2. To remove the square root, square both sides: x - 2 = 2² = 4. Now isolate x by moving the constant to the other side, so x = 4 + 2 = 6. Always check radical equations: substituting x = 6 makes the expression inside the root equal to 4, and √4 = 2. So the correct answer is 6.