Решите уравнение
(х+4)^2-х^2=2х+1
(х+5)(х-4)-х^2+18=0
(х+7)(х-7)-(х-3)^2=53
х^3-49х=0
(х-2)^3+(х+2)^3=2х(х^2-1)+3
(х+4)^2-х^2=2х+1
(х+5)(х-4)-х^2+18=0
(х+7)(х-7)-(х-3)^2=53
х^3-49х=0
(х-2)^3+(х+2)^3=2х(х^2-1)+3
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