rowena-lee_60b3a8f01c790
rowena-lee_60b3a8f01c790
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x² - 5x + 6 = 0 ∆ = (- 5)² - 4 . 1 . 6 ∆ = 25 - 24 ∆ = 1 x = - (- 5) ± √1/2 . 1 x = 5 ± 1/2 x' = 6/2 = 3 x" = 4/2 = 2 S = {2, 3}