【题目】分解因式:a3+a2﹣a﹣1=_______________


参考答案:

【答案】a﹣1)(a+12

【解析】

a3+a2﹣a﹣1=a3+a2a+1=a2a+1a+1=a+1)(a2﹣1=a+1)(a+1)(a﹣1=a﹣1)(a+12.故答案为(a﹣1)(a+12

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