2x(x²-1)怎么化简?
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2x(x²-1)怎么化简?
2x(x²-1)怎么化简?
2x(x²-1)怎么化简?
2X ^ 3-X ^ 2-1
= X ^ 3-1 + X ^ 3-X ^ 2
=(X-1)(2 + X +1)+ X 2( -1)
=(X-1)(2×2 + X +1)
2x(x+1)(x-1)
2(X-1)(X+1)