Jawaban:
B. x² - 8x + 15 = 0
Penjelasan dengan langkah-langkah:
Akar persamaan:
x₁ = 3 → (x₁ - 3) = 0
x₂ = 5 → (x₂ - 5) = 0
Persamaan kuadrat:
(x₁ - 3)(x₂ - 5) = 0
(x - 3)(x - 5) = 0
x² - 5x - 3x + 15 = 0
x² - 8x + 15 = 0
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Jawaban:
B. x² - 8x + 15 = 0
Penjelasan dengan langkah-langkah:
Akar persamaan:
x₁ = 3 → (x₁ - 3) = 0
x₂ = 5 → (x₂ - 5) = 0
Persamaan kuadrat:
(x₁ - 3)(x₂ - 5) = 0
(x - 3)(x - 5) = 0
x² - 5x - 3x + 15 = 0
x² - 8x + 15 = 0