Предмет: Алгебра, автор: danyaaplatonov

Воспользуйся формулой (a+b)²=a²+2ab+b2
Решить: (1+с+d)²
Пожалуйста

Ответы

Автор ответа: Аноним

1^2+c^2+d^2+2*1c+2*1d+2cd

1+c^2+d^2+2c+2d+2cd

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