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a = 3, b = -2, c = 5
maka
a + b = -b/a = -(-2)/3 = 2/3
a · b = c/a = 5/3
Sehingga persamaan dengan akar (1 - 3a) dan (1 - 3b) ialah
(x - (1 - 3a))(x - (1 - 3b)) = 0
⇒ x² - (1 - 3a + 1 - 3b)x + (1 - 3a)(1 - 3b) = 0
⇒ x² - (2 - 3(a + b))x + (1 - 3(a + b) + 9ab) = 0
⇒ x² - (2 - 3(2/3))x + (1 - 3(2/3) + 9(5/3)) = 0
⇒ x² - (2 - 2)x + (1 - 2 + 15) = 0
⇒ x² + 14 = 0
Terimakasih smoga membantu