Question

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Answer 1

Ответ:

(3 - x)·(3 + x) = 9 - х²

Пошаговое объяснение:

Требуется упростить выражение (3 - x)·(3 + x).

Применим следующую формулу сокращённого умножения:

(a - b)·(a + b) = a² - b².

В нашем случае a = 3 и b = х, то

(3 - x)·(3 + x) = 3² - х² = 9 - х².

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Answer 2

It seems like you've entered an expression: (3-x)(3+x), but I'm not sure what you'd like to know or do with this expression. Could you please clarify your question or provide more context?

(3-x)(3+x) is a quadratic expression, and if you want to simplify it or perform any specific operations, please let me know, and I'd be happy to assist you further.