Предмет: Алгебра, автор: ADEL50

Помогите найти произведение корней уравнения (х2+х-4)(х2+х+4)=9

Ответы

Автор ответа: dashenka090801

(2x+x-4) × (2x+x+4)=9
(3x-4)×(3x+4)=9
3x×3x=9
9x=9
x=1

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