8
Answer: CSet 5: Quadratic Equations (Beginner)
Explanation
PROBLEM
Solve: (x - 5) squared = 25. Find the positive solution.
Solve: (x - 5) squared = 25. Find the positive solution.
A.
8
B.
12
C.✓ Correct
10
D.
9
Detailed Explanation
Choice C is the best answer. Take square root: x - 5 = ±5. x = 5 + 5 = 10 or x = 5 - 5 = 0
Why others are wrong:
A: 8 is incorrect because it does not satisfy the equation.
B: 12 is incorrect because it does not satisfy the equation.
D: 9 is incorrect because it does not satisfy the equation.