Решение квадратных уравнений. Урок 2 Установи соответствие между уравнением и суммой и произведением его корней.
2x2 – 17x – 11 = 0
2x2 + 17x – 11 = 0
2x2 – 17x + 11 = 0
2x2 + 17x + 11 = 0
x1 + x2 = – 8,5; x1 ∙ x2 = 5,5
x1 + x2 = 8,5; x1 ∙ x2 = 5,5
x1 + x2 = 8,5; x1 ∙ x2 = –5,5
x1 + x2 = –8,5; x1 ∙ x2 = –5,5
2x2 – 17x – 11 = 0
2x2 + 17x – 11 = 0
2x2 – 17x + 11 = 0
2x2 + 17x + 11 = 0
x1 + x2 = – 8,5; x1 ∙ x2 = 5,5
x1 + x2 = 8,5; x1 ∙ x2 = 5,5
x1 + x2 = 8,5; x1 ∙ x2 = –5,5
x1 + x2 = –8,5; x1 ∙ x2 = –5,5
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