Пожалуйста, решите ( 8 класс ) 1) 46^2 - 26^2
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35^3 - 25^2
2) 72^2 - 2 * 72 * 53 + 53^2
3) (х + 4)^2 - х^2 = 2х + 1
4) х (х^2 - 2) = х^3 +8
[ ^2 это в квадрат, ^3 в кубе ]
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