9y = 13y2 – 4 The discriminant of the quadratic is ?

Question

9y = 13y2 – 4
The discriminant of the quadratic is ?

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Thành Đạt 6 months 2021-08-22T14:25:14+00:00 2 Answers 4 views 0

Answers ( )

    0
    2021-08-22T14:26:17+00:00

    Answer:

    289

    Step-by-step explanation:

    13y^2-9y-4 = 0\\

    D = b^2-4ac

    Wherein,

    b = 9

    a = 13

    c = -4

    D = 9^2-(4*13*-4)\\= 289

    0
    2021-08-22T14:26:19+00:00

    Answer:

    289

    Step-by-step explanation:

    1. if to re-write the given equation, then 13y²-9y-4=0;

    2. if to calculate the required discriminant, then:

    D=81+13*4*4=208+81=289.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )