a的n次方加b的n次方等于多少?
因式分解
人气：111 ℃ 时间：2019-11-16 17:13:05
解答
原式=（a-b)(a^n-1+a^n-2*b+
a^n-3*b^2+.+a^2*b^n-3+
a*b^n-2+b^n-1)
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