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Решение квадратных уравнений. Урок 3
Выбери квадратное уравнение с корнями -3; 5.
х2 - 2x + 15 = 0
х2 - 2x – 15 = 0
х2 + 2х + 15 = 0
12 + 2х - 15 = 0​
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