5
Answer: DSet 4: Quadratic Equations (Beginner)
Explanation
PROBLEM
Solve: (x - 2) squared = 1. Find the positive solution.
Solve: (x - 2) squared = 1. Find the positive solution.
A.
2
B.
1
C.
4
D.✓ Correct
3
Detailed Explanation
Choice D is the best answer. Take square root: x - 2 = ±1. x = 2 + 1 = 3 or x = 2 - 1 = 1
Why others are wrong:
A: 2 is incorrect because it does not satisfy the equation.
B: 1 is incorrect because it does not satisfy the equation.
C: 4 is incorrect because it does not satisfy the equation.