Предмет: Алгебра, автор: karakattorekhan2008

(7n-8)²-n²
помогите ;-;

Ответы

Автор ответа: coolunnameduser

1

(a - b)² = a² - 2ab + b²

(7n - 8)² - n² = 49n² - 112n + 64 - n² = 48n² - 112n + 64.

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