Set 2: Quadratic Equations (Beginner)

[Variation 1] **Choice A is the best answer.** Take square root: x - 2 = ±5. x = 2 + 5 = 7 or x = 2 - 5 = -3

Explanation

Answer: A

PROBLEM

Recent studies show that solve: (x - 2) squared = 25. Find the positive solution.

Solve: (x - 2) squared = 25. Find the positive solution.

✓ Correct

Detailed Explanation

[Variation 1] Choice A is the best answer. Take square root: x - 2 = ±5. x = 2 + 5 = 7 or x = 2 - 5 = -3

Why others are wrong:

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

C: 6 is incorrect because it does not satisfy the equation.

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