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Автор - sashashori111

(Х-4)*(х+4)-6х=(х-2)^2

Ответ

Автор - m11m
(х-4)(х+4)-6х=(х-2)²
х²-16-6х=х²-4х+4
х²-х²-6х+4х=4+16
-2х=20
х=20 : (-2)
х=-10
Ответ: -10.

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