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Өрнекті ықшамдау
(3×-a)(a+3x)

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Ответ:

MaliaM

15.10.2020 16:43

3а-9х*3а+9х=3а×3а=9а

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Ответ:

allahgulievaru

15.10.2020 16:43

Объяснение:

(3x-a)(3x+a)=9x²-a²;

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