Предмет: Алгебра, автор: пиростанице2345

докажите, что выражение х²-6х+13 принимает положительные значение при всех значениях
докажите, что выражение х²-12х+38 принимает положительные значения при всех значениях.

Ответы

Автор ответа: mikael2

1. x²-6x+13 D=36-4*13=36-52<0 парабола при всех x над осью Х

2. x²-12x+38 D = 144-152= -8<0 так же как в примере 1

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