Set 3: Quadratic Equations (Beginner)

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

Explanation

Answer: A

PROBLEM

Recent studies show that solve: (x - 5) squared = 1. Find the positive solution.

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

✓ Correct

Detailed Explanation

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

Why others are wrong:

B: 12 is incorrect because it does not satisfy the equation.

C: 4 is incorrect because it does not satisfy the equation.

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