Set 4: Quadratic Equations (Beginner)

[Variation 1] **Choice C is the best answer.** Take square root: x - 3 = ±3. x = 3 + 3 = 6 or x = 3 - 3 = 0

Explanation

Answer: C

PROBLEM

Recent studies show that solve: (x - 3) squared = 9. Find the positive solution.

Solve: (x - 3) squared = 9. Find the positive solution.

✓ Correct

Detailed Explanation

[Variation 1] Choice C is the best answer. Take square root: x - 3 = ±3. x = 3 + 3 = 6 or x = 3 - 3 = 0

Why others are wrong:

A: 8 is incorrect because it does not satisfy the equation.

B: 5 is incorrect because it does not satisfy the equation.

D: 4 is incorrect because it does not satisfy the equation.