Solve for x: x² + 5x - 36 = 0
Difficulty: Medium
About this MCQ
Medium SAT item. Correct choice: B. x = 4 or x = -9.
- A. x = 5 or x = -10
Why not A: “x = 5 or x = -10” is not x = 4 or x = -9.
- B. x = 4 or x = -9 ✓
- C. x = -4 or x = 9
Why not C: “x = -4 or x = 9” is not x = 4 or x = -9.
- D. x = 4 or x = -8
Why not D: “x = 4 or x = -8” is not x = 4 or x = -9.
Correct answer
B. x = 4 or x = -9
Explanation
x = 4 or x = -9 (option B) is the accepted answer to “Solve for x: x² + 5x - 36 = 0”. Option A (x = 5 or x = -10) is a different value from x = 4 or x = -9. Option C (x = -4 or x = 9) is a different value from x = 4 or x = -9. Option D (x = 4 or x = -8) is a different value from x = 4 or x = -9. Keep x = 4 or x = -9 as the SAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: SAT, Math, Algebra, American Exams
Submitted by: MCQsHub Editorial
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