Предмет: Алгебра, автор: rinozufuy

Упростите выражение: (2х – 1)(2х + 1) – (2х – 1)2.

Ответы

Автор ответа: Сещемару

1

$4 x^{2}-1-4 x+2=4 x^{2}-4x+1= (2x-1)^{2}$

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