Предмет: Алгебра, автор: Vvikttorriaa

Розкласти квадратний тричлен на множники: x²-2x-3=
Поомоогитеее

Ответы

Автор ответа: tetamotatetyamotya
13

Ответ:вот

Объяснение:

Приложения:
Автор ответа: mathkot
7

Ответ:

x^{2} - 2x - 3 = (x - 3)(x + 1)

Объяснение:

x^{2}  - 2x - 3 = 0

D = 4 - 4 * 1 * (-3) = 4 + 12 = 16 = 4^{2}

x_{1} = \frac{2 + 4}{2} = \frac{6}{2} = 3

x_{2} = \frac{2 - 4}{2} = -\frac{2}{2} = -1

x^{2} - 2x - 3 = (x - 3)(x + 1)

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