Ответ:
3x²-6x+x²-1=4x²-4x+1
4x²-4x²=6x-4x+1+1
0=2x+2
-2x=2
x=-1
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Ответ:
3x²-6x+x²-1=4x²-4x+1
4x²-4x²=6x-4x+1+1
0=2x+2
-2x=2
x=-1