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x2 = (3 - 2√3)
maka persamaan kuadratnya
(x - x1)(x - x2) = 0
⇒ (x - (3 + 2√3))(x - (3 - 2√3)) = 0
⇒ x² - (3 + 2√3 + 3 - 2√3)x + (3 + 2√3)(3 - 2√3) = 0
⇒ x² - 6x + (9 - 12) = 0
⇒ x² - 6x - 3 = 0
Terimakasih semoga membantu