9
Answer: BSet 1: Quadratic Equations (Beginner)
Explanation
PROBLEM
Solve: (x - 6) squared = 16. Find the positive solution.
Solve: (x - 6) squared = 16. Find the positive solution.
A.
12
B.✓ Correct
10
C.
9
D.
8
Detailed Explanation
Choice B is the best answer. Take square root: x - 6 = ±4. x = 6 + 4 = 10 or x = 6 - 4 = 2
Why others are wrong:
A: 12 is incorrect because it does not satisfy the equation.
C: 9 is incorrect because it does not satisfy the equation.
D: 8 is incorrect because it does not satisfy the equation.