Set 2: Quadratic Equations (Beginner)

**Choice D is the best answer.** Take square root: x - 5 = ±1. x = 5 + 1 = 6 or x = 5 - 1 = 4

Explanation

Answer: D

PROBLEM

Solve: (x - 5) squared = 1. Find the positive solution.

✓ Correct

Detailed Explanation

Choice D is the best answer. Take square root: x - 5 = ±1. x = 5 + 1 = 6 or x = 5 - 1 = 4

Why others are wrong:

A: 5 is incorrect because it does not satisfy the equation.

B: 8 is incorrect because it does not satisfy the equation.

C: 7 is incorrect because it does not satisfy the equation.