engineering mathematics MCQ #4316

If α, β are roots of the equation x² + x + 1 = 0, then α² + β² =

engineering mathematics MCQ #4316

  1. Question 1

    Q1. If α, β are roots of the equation x² + x + 1 = 0, then α² + β² =

    • A) -1
    • B) 1
    • C) 0
    • D) 2

    Answer: -1

    Explanation: α + β = -1, αβ = 1, so α² + β² = (α + β)² - 2αβ = (-1)² - 2*1 = -1.