Предмет: Алгебра, автор: Supersholnik

Помогите решить квадратичную функцию
-x^2+6x-5

Ответы

Автор ответа: Аноним

Избавимся от минусов старшего коэффициента: x^2-6x+5=0
1) сумма коэффициентов
a+b+c=0
x=1, x=5.
2) дискриминант
D=36-20=16
x=(6+4)/2=5
x=(6-4)/2=1
3) половинный дискриминант
D/4=9-5=4
x=3+2=5
x=3-2=1

Выбери любой, который знаешь.

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Помогите решить квадратичную функцию -x^2+6x-5

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Помогите решить квадратичную функцию
-x^2+6x-5