Предмет: Алгебра, автор: Kjjjjjj44rus

x в квадрате - 14x+45
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Ответы

Автор ответа: nKrynka

0

Решение
x² - 14x + 45 = 0
D = 196 - 4*1*45 = 196 - 180 = 16
x = (14 - 4)/2 = 5
x = (14 + 4)/2 = 9
x² - 14x + 45 = (x - 5)*(x - 9)

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