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Автор - 09kz09

помогите решить. заранее спасибо ​

Ответ

Автор - LincleYoujin

Ответ:

( {x}^{2}  - 4x + 5x - 20) times (x + 1) = ( {x}^{2}  + x - 20)(x + 1) =x^{3}  +  {x}^{2}  +  {x}^{2}  + x - 20x - 20 {x}^{3}  + 2 {x}^{2}  - 19x - 20

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