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如何分解因式x³ -3x² +3x-2？将3x拆为2x和x,你能想到吗?
如何分解因式x³ -3x² +3x-2?先将3x拆为2x和x,再提公因式，十字交叉分解后，再提公因式
初中数学竞赛题：因式分解题型大全53/121
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