engineering mathematics MCQ #940

If f(x) = x² + 3x - 4, what is f(-1)?

engineering mathematics MCQ #940

  1. Question 1

    Q1. If f(x) = x² + 3x - 4, what is f(-1)?

    • A) -6
    • B) -4
    • C) -8
    • D) -2

    Answer: -8

    Explanation: Substituting x = -1 into f(x) = x² + 3x - 4 gives f(-1) = (-1)² + 3(-1) - 4 = -8 + 1 - 3 = -6, correction: 1 -3 -4 = -6.