Обясните пожалуйста (x-3)^3=49(x-3)
(x-3)^3-49(x-3)=0
(x-3)((x-3)^2-49)=0
x-3=0
(x-3)^2-49=0
x1=-4 как получили??
x2=3 как получили??
x3=10 как получили?
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