Предмет: Алгебра, автор: Łųçů

Помогите, пожалуйста. Алгебра 8 класс. Квадратные уравнения.

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Автор ответа: Александддддрррр

1)10х в квадрате +7х-3
4) подставь 3 в уравнение
9-15+6=0
15-15=0
0=0

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