Предмет: Алгебра, автор: Yarosla804ka

Раскрой скобки:(x+10)*(x+9)

Ответы

Автор ответа: lasushin123

Ответ: x^2+19x+90

(x+10)*(x+9)=x*(x+9)+10*(x+9)=x^2+9x+10x+90=x^2+19x+90

Объяснение:

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