Solve for x: x² - 16x + 63 = 0
- A. x = 8 or x = 8
- B. x = 7 or x = 9 ✓
- C. x = 7 or x = 10
- D. x = -7 or x = -9
Correct answer
B. x = 7 or x = 9
Explanation
Factor the quadratic: (x - 7)(x - 9) = 0, so x = 7 or x = 9.
Related MCQs
- What is the slope of a line passing through the points (6, -4) and (7, -5)?
- What is the greatest common factor (GCF) of 34 and 15?
- What is 50% of 320?
- What is the greatest common factor (GCF) of 26 and 74?
- What is the greatest common factor (GCF) of 67 and 15?
- A car travels at 75 miles per hour. How far does it travel in 1 hours?