Предмет: Алгебра, автор: vvadishka2020

Виконайте множення
1) y(p+2-x)
2) (c+5)(b-2) желательно обьяснить для меня.

Ответы

Автор ответа: klveranika42

делаешь всё фонтанчиком например как в 1 у перемнржаешь на скобки

1)ур+2у-ух

2)сb-2c+5b-10

Автор ответа: ilaffyvashie

1) y (p + 2 - x) = py + 2y - xy;
2) (c + 5) (b - 2) = c x (b - 2) + 5 (b - 2) = bc - 2c + 5b - 10
(решение второго: сначала умножаем b - 2 на c + 5, тем самым используем распределительное свойство, а после раскрываем скобки)

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