If a = 4 and b = -3; what is the value of a² - 2ab + b²?
Difficulty: Medium
About this MCQ
Medium GMAT item. Correct choice: A. 49.
- A. 49 ✓
- B. 7
Why not B: “7” is not 49.
- C. -49
Why not C: “-49” is not 49.
- D. 25
Why not D: “25” is not 49.
Correct answer
A. 49
Explanation
49 (option A) is the accepted answer to “If a = 4 and b = -3; what is the value of a² - 2ab + b²”. Option B (7) is a different value from 49. Option C (-49) is a different value from 49. Option D (25) is a different value from 49. Keep 49 as the GMAT fact for this stem.
Source: Original practice question; MCQsHub
Tags: Algebra, American Exams, Quant, GMAT
Submitted by: MCQsHub Editorial
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