Matematika

Pertanyaan

akar persamaan x.x +5x+3=0

1 Jawaban

  • Bab Persamaan Kuadrat
    Matematika SMP Kelas VIII

    x² + 5x + 3 = 0
    a = 1; b = 5; c = 3

    x₁₂ = (-b +- √((b)² - 4 . a . c))/(2 . a)
    x₁₂ = (-5 +- √(5² - 4 . 1 . 3)) / (2 . 1)
    x₁₂ = (-5 +- √(25 - 12)) / 2
    x₁₂ = (-5 +- √13) / 2

    x₁ = (-5 + √13) / 2

    x₂ = (-5 - √13) / 2

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