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(x-2)*[(x-2)²-x(x+2)]=0
(x-2)(x²-4x+4-x²-2x)=0
(x-2)(-6x+4)=0
x-2=0 v -6x+4=0
x=2 v x=4/6=2/3
Odp. x∈{2/3, 2}