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30 September, 16:40

What is the discriminant of

qx^2 + rx + s = 0?

a. the absolute value of a+b

b. q^2-4rs

c. r^2-4qs

d. s^2-4qr

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Answers (1)
  1. 30 September, 20:23
    0
    c. r^2 - 4qs

    Step-by-step explanation:

    When compared to the standard quadratic ...

    ax^2 + bx + c = 0

    we find that your quadratic has ...

    a = q, b = r, c = s

    Substituting these into the formula for the discriminant, we get ...

    d = b^2 - 4ac = r^2 - 4qs

    The discriminant is r^2 - 4qs.
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