Matematika

Pertanyaan

X - 2y = 10
Y = X kuadrat + 2x - 15

1 Jawaban

  • Y = x² + 2x - 15

    x - 2y = 10
    x - 2(x² + 2x - 15) = 10
    x - 2x² - 4x + 30 = 10
    -2x² - 3x + 30 = 10
    2x² + 3x - 20 = 0
    ( 2x - 5) (x + 4)
    x1 = 5/2 y1 = -15/4
    x2 = -4 y2 = 7

    Maaf kalo salah

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