Предмет: Алгебра, автор: Kislein

Помогите очень срочно надо.
Найти q, при котором для уравнения 3х2-6х+q=0 выполняется условие: х1= -2х2.

Ответы

Автор ответа: Ramiz87

Записываем систему
первое уравнение 6-6х+q=0
второе уравнение х=-4
подставляем второе уравнение в первое и получаем уравнение
6-6(-4)+q=0
перекидываем все кроме q на другую сторону равенства и получаем
q=-6+6х4; q=18

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