July 2022 1 7 Report
7 класс. Решите примеры, используя формулу сокращённого умножения.

(x - 1)(x + 1)
(6x - 2)(6x + 2)
(4a - b)(b + 4a)
(3x - 5y)(3x + 5y)
(5x - 2y^2)(5x + 2y^2)
(4x^2 - 2y^2)(4x^2 + 2y^2)
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