n!*n+n!=(n+1)!是阶乘的什么公式

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n+1)!=(n+1)*n*(n-1)*(n-2)*....*1
=(n+1)*n!
=n*n!+1*n!
=n*n!+n!
分汪塌配宴核律困祥圆

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(n+1)!=(n+1)*n*(n-1)*(n-2)*....*1
=(n+1)*n!
=n*n!+1*n!
=n*n!+n!
分配清拍律誉正森庆亩

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