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Ответ дан
IrkaShevko

Ответ:

Пошаговое объяснение:

1) (5x - x - y)(5x + x + y) = (4x - y)(6x + y)

2) (10 - 3a - 7y)(10 + 3a + 7y)

3) (1 - a² - b²)(1 + a² + b²)

4) (m³n - m + n)(m³n + m - n)

5) (x²y - a² + b²)(x²y + a² - b²)

6) (3xy² - a + b)(3xy² + a - b)

Использовали формулу разности квадратов: a² - b² = (a-b)(a+b)

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