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(3m-1)^2(3m+1)^2(9m^2+1)^2
人气:351 ℃ 时间:2020-05-26 00:43:52
解答
(3m-1)²(3m+1)²(9m²+1)²=[(3m-1)(3m+1)]²(9m²+1)²=(9m²-1)²(9m²+1)²=[(9m²-1)(9m²+1)]²=(81m⁴-1)²=6561m^8-162m⁴+1m^8表...
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