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2014-05-18T14:11:33+03:00
⇒x³-x²+4x²-4x+3x-3=x³+2x²-3x+x²+2x-3
x³+3x²-x-3=x³+3x²+x-3
x³-x³+3x²-3x²-x-x=-3+3
-2x=0
x=0
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