Предмет: Алгебра, автор: настя63161

пожалуйста помогите!!!)))

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Автор ответа: Ленгит

0

1)(х+9)(х-9)
2)(у-3)(у-3)
3)(4х+7)(4х-7)
4)(3а+5b)(3a+5b)

Автор ответа: настя63161

0

спасибо!!))

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