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计算(a+1)(a+2)(a+3)(a-6)
人气:166 ℃ 时间:2020-02-05 06:29:25
解答
(a+1)(a+2)(a+3)(a-6)
=[(a+1)(a-6)] [(a+2)(a+3)]
=(a²-5a-6)(a²+5a+6)
=(a²)²-(5a+6)²
=a^4-25a²-60a-36
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