November 2018 2 67 Report
Akar-akar persamaan kuadrat x² - 3x - 5 = 0 adalah  x_{1} dan  x_{2} . Nilai dari (  x_{1} + x_{2} )² + 3 x_{1} x x_{2} =...........
a. -8
b. -6
c. -2
d. 6
e. 8

(Isi cara)

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