Solve for x: x² + 6x + 5 = 0
Difficulty: Medium
About this MCQ
Medium GMAT item. Correct choice: D. x = -1 or x = -5.
- A. x = -1 or x = -4
Why not A: “x = -1 or x = -4” is not x = -1 or x = -5.
- B. x = 0 or x = -6
Why not B: “x = 0 or x = -6” is not x = -1 or x = -5.
- C. x = 1 or x = 5
Why not C: “x = 1 or x = 5” is not x = -1 or x = -5.
- D. x = -1 or x = -5 ✓
Correct answer
D. x = -1 or x = -5
Explanation
x = -1 or x = -5 (option D) is the accepted answer to “Solve for x: x² + 6x + 5 = 0”. Option A (x = -1 or x = -4) is a different value from x = -1 or x = -5. Option B (x = 0 or x = -6) is a different value from x = -1 or x = -5. Option C (x = 1 or x = 5) is a different value from x = -1 or x = -5. Keep x = -1 or x = -5 as the GMAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, Algebra, American Exams, GMAT
Submitted by: MCQsHub Editorial
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