3
Answer: BSet 1: Quadratic Equations (Beginner)
Explanation
PROBLEM
Solve: (x - 3) squared = 4. Find the positive solution.
Solve: (x - 3) squared = 4. Find the positive solution.
A.
7
B.✓ Correct
5
C.
6
D.
4
Detailed Explanation
Choice B is the best answer. Take square root: x - 3 = ±2. x = 3 + 2 = 5 or x = 3 - 2 = 1
Why others are wrong:
A: 7 is incorrect because it does not satisfy the equation.
C: 6 is incorrect because it does not satisfy the equation.
D: 4 is incorrect because it does not satisfy the equation.