问题
填空题
观察下列等式:
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答案
第n个等式为:
=(n+1)3 (n+1) n+1 (n+1)3-1
(n为正整数).3 n+1 (n+1)3-1
故答案为:
=(n+1)3 (n+1) n+1 (n+1)3-1
(n为正整数).3 n+1 (n+1)3-1
观察下列等式:
|
第n个等式为:
=(n+1)3 (n+1) n+1 (n+1)3-1
(n为正整数).3 n+1 (n+1)3-1
故答案为:
=(n+1)3 (n+1) n+1 (n+1)3-1
(n为正整数).3 n+1 (n+1)3-1