Предмет: Алгебра, автор: jungler74

1 задание и 2 или то или то 7 КЛАСС ХЭЛПП ПЖЖ​

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Ответы

Автор ответа: Аноним
1

1. а) 12a³-18a²=6a²(2a-3)

б) 60a⁴b^5+36a³b^6-48a³b²=12a³b²(5ab³+3b⁴-4)

2. а) 5a+5b+ab+b²=5(a+b)+b(a+b)=(5+b)(a+b)

б) x-3xy-21y+7=x(1-3y)+7(1-3y)=(x+7)(1-3y)

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