Solve for x: x² - 7x - 8 = 0
- A. x = -1 or x = 9
- B. x = 1 or x = -8
- C. x = 0 or x = 7
- D. x = -1 or x = 8 ✓
Correct answer
D. x = -1 or x = 8
Explanation
Factor the quadratic: (x - -1)(x - 8) = 0, so x = -1 or x = 8.
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