2
Answer: BSet 1: Quadratic Equations (Beginner)
Explanation
PROBLEM
Solve: (x - 2) squared = 25. Find the positive solution.
Solve: (x - 2) squared = 25. Find the positive solution.
A.
8
B.✓ Correct
7
C.
14
D.
6
Detailed Explanation
Choice B is the best answer. Take square root: x - 2 = ±5. x = 2 + 5 = 7 or x = 2 - 5 = -3
Why others are wrong:
A: 8 is incorrect because it does not satisfy the equation.
C: 14 is incorrect because it does not satisfy the equation.
D: 6 is incorrect because it does not satisfy the equation.