Объяснение:
2x² - x - 2 = 0
D = b² - 4ac = (-1)² - 4 · 2 · (-2) = 1 + 16 = 17.
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Объяснение:
2x² - x - 2 = 0
D = b² - 4ac = (-1)² - 4 · 2 · (-2) = 1 + 16 = 17.