1. Английский язык
  2. Өрнекті ықшамдау (3×-a)(a+3x)​

Өрнекті ықшамдау
(3×-a)(a+3x)​

dcveergh dcveergh    1   02.09.2020 16:21    1

Ответы
Ангел89178931527 Ангел89178931527  15.10.2020 16:43

3а-9х*3а+9х=3а×3а=9а

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Matvey0061 Matvey0061  15.10.2020 16:43

Объяснение:

(3x-a)(3x+a)=9x²-a²;

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