engineering mathematics MCQ #4336

If the roots of the equation x² + 2x + k = 0 are real, then?

engineering mathematics MCQ #4336

  1. Question 1

    Q1. If the roots of the equation x² + 2x + k = 0 are real, then?

    • A) k ≤ 1
    • B) k ≥ 1
    • C) k = 1
    • D) k < 1

    Answer: k ≤ 1

    Explanation: For real roots, discriminant (b² - 4ac) ≥ 0. So, 4 - 4k ≥ 0, giving k ≤ 1.