Matematika

Pertanyaan

Is anyone can help me please☹️
Is anyone can help me please☹️

2 Jawaban

  • (x + 1)(x - 3) = 5
    [tex] x^{2} [/tex] - 3x + x - 3 = 5
    [tex] x^{2} [/tex] - 2x - 3 = 5
    [tex] x^{2} [/tex] - 2x - 3 - 5 = 0
    [tex] x^{2} [/tex] - 2x - 8 = 0

    Maka a = 1, b = -2, dan c = -8
  • Bentuk umum PK :
    ax² + bx + c = 0 dengan ketentuan a ≠ 0

    Hilangkan kurung dengan mengali secara distributif
    (x + 1)(x - 3) = 5
    x² - 3x + 1x - 3 = 5
    x² - 2x -3 - 5 = 0
    x² - 2x - 8  = 0
    Dari PK tersebut, diperoleh :
    a = 1
    b = - 2
    c = - 8