Предмет: Алгебра, автор: daoi111

Помогите решить задание по алгебре! 7 класс

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Автор ответа: NNNLLL54
1

Ответ:  №2 .

(2x^3-0,7y^2)(2x^3+0,7y^2)=(2x^3)^2-(0,7y^2)^2=4x^6-0,49y^4

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