280 .
а)(х-1)*х=0 б)(х-2)*1\2х=0 в)(х-1)(х+3)=0
х-1=0 х=0 х-2=0 1\2х=0 х-1=0 х+3=0
х₁=1 х₂=0 х₁=2 х₂=0 х₁=1 х₂=-3
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280 .
а)(х-1)*х=0 б)(х-2)*1\2х=0 в)(х-1)(х+3)=0
х-1=0 х=0 х-2=0 1\2х=0 х-1=0 х+3=0
х₁=1 х₂=0 х₁=2 х₂=0 х₁=1 х₂=-3