engineering mathematics MCQ #4304

If α, β are the roots of x² - x + 1 = 0, then α²⁰⁰⁹ + β²⁰⁰⁹ =

engineering mathematics MCQ #4304

  1. Question 1

    Q1. If α, β are the roots of x² - x + 1 = 0, then α²⁰⁰⁹ + β²⁰⁰⁹ =

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

    Answer: -1

    Explanation: The roots are complex cube roots of unity, so α³ = 1 and β³ = 1, hence α²⁰⁰⁹ + β²⁰⁰⁹ = (α³)⁶⁷³ + (β³)⁶⁷³ = -1.