Предмет: Алгебра, автор: ashexestens

Решить квадратное уравнение:
1) 81x в квадрате = 49
2) 5x в квадрате + 2x = 0
3) 6x в квадрате + 7x - 3 = 0
4) 5x в квадрате - 10x + 17 = 0
Разложить на множители квадратный трёхчлен:
1) x в квадрате - 20x - 21
2) 3x в квадрате + x - 10

Ответы

Автор ответа: Rubila

надеюсь хоть как-то помогло

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