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与(x+1)(x2-x+1)的积等于x6-1的多项式是.
题目详情
与(x+1)(x2-x+1)的积等于x6-1的多项式是______.
▼优质解答
答案和解析
∵x6-1
=(x3)2-1
=(x3-1)(x3+1)
=(x-1)(x2+x+1)(x+1)(x2-x+1),
∴(x-1)(x2+x+1)(x+1)(x2-x+1)÷(x+1)(x2-x+1)
=(x-1)(x2+x+1)
=x3-1.
故答案为x3-1.
=(x3)2-1
=(x3-1)(x3+1)
=(x-1)(x2+x+1)(x+1)(x2-x+1),
∴(x-1)(x2+x+1)(x+1)(x2-x+1)÷(x+1)(x2-x+1)
=(x-1)(x2+x+1)
=x3-1.
故答案为x3-1.
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