Solve for x: x² - 1x - 12 = 0
Difficulty: Medium
About this MCQ
Medium SAT item. Correct choice: A. x = 4 or x = -3.
- A. x = 4 or x = -3 ✓
- B. x = -4 or x = 3
Why not B: “x = -4 or x = 3” is not x = 4 or x = -3.
- C. x = 5 or x = -4
Why not C: “x = 5 or x = -4” is not x = 4 or x = -3.
- D. x = 4 or x = -2
Why not D: “x = 4 or x = -2” is not x = 4 or x = -3.
Correct answer
A. x = 4 or x = -3
Explanation
x = 4 or x = -3 (option A) is the accepted answer to “Solve for x: x² - 1x - 12 = 0”. Option B (x = -4 or x = 3) is a different value from x = 4 or x = -3. Option C (x = 5 or x = -4) is a different value from x = 4 or x = -3. Option D (x = 4 or x = -2) is a different value from x = 4 or x = -3. Keep x = 4 or x = -3 as the SAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: SAT, Math, Algebra, American Exams
Submitted by: MCQsHub Editorial
Related MCQs
- A jar contains only red and blue marbles in a ratio of 9:6. If there are 18 blue marbles, how many red marbles...
- A triangle has a base of 10 and a height of 26. What is its area?
- A jar contains only red and blue marbles in a ratio of 2:3. If there are 15 blue marbles, how many red marbles...
- If f(x) = 5x + 0, what is f(-3)?
- A rectangular prism has a length of 14, width of 2, and height of 3. What is its volume?
- What is the greatest common factor (GCF) of 11 and 86?