PSAT Math Multiple-Choice Question 440: Answer and Explanation
Question: 440
Which of the following is an equivalent form of the expression (x - 4)(x + 2)?
- A.
- B.
- C.
- D.
Correct Answer: B
Explanation:
B
Difficulty: Easy
Getting to the Answer: FOIL the binomials First: (x)(x) = x2. Outer: (2)(x). Inner: (-4)(x). Last: (2)(-4) = -8. Add all the terms together and combine like terms: x2 - 4x + 2x - 8 = x2 - 2x - 8. The correct answer is (B).
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