5
QuizMultiple Choice

The Quadratic Formula — Quiz

Question 5 • Advanced Algebra: Concepts and Connections

Which equation has the solutions x is equal to the fraction with numerator negative 3 plus or minus square root of 3 i and denominator 2 ?

Answer
A
2 x squared plus 6 x plus 9 is equal to 0
B
x squared plus 3 x plus 3 is equal to 0
C
2 x squared plus 6 x plus 3 is equal to 0
D
x squared plus 3 x plus 12 is equal to 0

Explanation

The two solutions have sum −3 and product 3: the product is ((−3)² + (√3)²)/4 = 12/4 = 3. A quadratic with roots whose sum is −3 and product is 3 is x² − (−3)x + 3 = x² + 3x + 3. Therefore, the matching equation is choice B.

AI-written and checked against the verified answer.

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