Предмет: Алгебра, автор: muxoulpetrovu

СРОЧНОЙ ДАЮ 50 БАЛЛОВ 2 ПРИМЕРА ПО АЛГЕБРЕ

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Автор ответа: BerezhnayaSofia

0

Ответ:

(4-х) (х+5) +х²=0

4х+20-х²-5х+х²=0

4х+20-5х=0

-х=-20

х=20

4у³-(1+2у) (2у²-у)

4у³-(2у²-у+4у³-2у²)

4у³-2у²+у-4у³+2у²

у=1

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