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12 October, 18:43

If the discriminant of a quadratie equation is equal to - 8 which statement describes the root

There are two complex too

There are two real roots

There is one real root

There is one complex rool

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Answers (2)
  1. 12 October, 18:49
    0
    Answer: A!
  2. 12 October, 18:52
    0
    there are two complex roots

    Step-by-step explanation:

    Recall that for a quadratic equation

    y = ax² + bx + c

    the solution given by the quadratic formula is

    x = (-b ± √discriminant) / 2a

    if the discriminant is negative, the radical term will become √ (negative number), which we know gives complex solutions. Hence we can eliminate real roots as possible answers.

    Also notice that the "±" sign in the quadratic formula means that you will get 2 possible solutions:

    x = (-b + √discriminant) / 2a

    or

    x = (-b - √discriminant) / 2a

    Hence we know we will get 2 solutions.

    Combining our findings, we can conclude that if the discriminant is negative, we will get 2 complex roots.
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