x²+x(x-2)=0
x²+x²-2x=0
2x²-2x=0
2x(x-1)=0
x=0 v x=1
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x²+x(x-2)=0
x²+x²-2x=0
2x²-2x=0
2x(x-1)=0
x=0 v x=1