Предмет: Алгебра, автор: dudnikoleksandra3

виконати завдання
-х²-8х+9

Ответы

Автор ответа: Аноним

0

Объяснение:

Завдання не поставлено, тому вирішуємо квадратне рівняння

-x²-8x+9=0 | ×(-1)

x²+8x-9=0

[x1 × x2 = -9

[x1 + x2 = -8

x1 = -9, x2 = 1

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