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18 March, 16:51

What is the value of the discriminant for the quadratic equation 0 = x + 2 + x2?

Discriminant = b2 - 4ac

A) - 9

B) - 7

C) 7

D) 9

+3
Answers (1)
  1. 18 March, 17:31
    0
    B - - 7

    Step-by-step explanation:

    0 = x + 2 + x^2

    Rearrange it

    x^2 + x + 2 = 0

    Then, using the discriminant

    b^2 - 4ac

    x^2 - a

    x - b

    2 - c

    Insert the values into the discriminant

    Using their coefficients

    b^2 - 4ac

    = 1^2 - 4 * 1^2 * 2

    = 1 - 4 * 1 * 2

    = 1 - 8

    = - 7

    The value of the discriminate is - 7
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