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13 December, 07:23

What are the zeros of f (x) = x^2 + x - 20?

A. x = - 4 and x = 5

B. x = - 2 and x = 10

C. x = - 5 and x = 4

O D. x = - 10 and x = 2

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Answers (1)
  1. 13 December, 08:16
    0
    X² + x - 20

    = (x+5) (x-4)

    x + 5 = 0

    x = - 5

    x - 4 = 0

    x = 4

    hence the answer is C
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