engineering mathematics MCQ #4310

If the roots of x² + 2x + 3 = 0 are α, β, then α² + β² =

engineering mathematics MCQ #4310

  1. Question 1

    Q1. If the roots of x² + 2x + 3 = 0 are α, β, then α² + β² =

    • A) -2
    • B) 2
    • C) -4
    • D) 4

    Answer: -2

    Explanation: α + β = -2, αβ = 3, so α² + β² = (α + β)² - 2αβ = (-2)² - 2*3 = 4 - 6 = -2.