PSAT Math Multiple-Choice Question 457: Answer and Explanation
Question: 457
What are the roots of the above equation?
- A.
- B.
- C.
- D.
Correct Answer: A
Explanation:
A
Difficulty: Medium
Getting to the Answer: Since the answer choices have radicals, factoring the equation would be extremely difficult. Use the quadratic formula to find the roots of the equation:
This matches (A).
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