1*2*3*4+2*3*4*5+3*4*5*6+...+n*(n+1)*(n+2)*(n+3)=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 14:59:56
![1*2*3*4+2*3*4*5+3*4*5*6+...+n*(n+1)*(n+2)*(n+3)=?](/uploads/image/z/11563396-52-6.jpg?t=1%2A2%2A3%2A4%2B2%2A3%2A4%2A5%2B3%2A4%2A5%2A6%2B...%2Bn%2A%28n%2B1%29%2A%28n%2B2%29%2A%28n%2B3%29%3D%3F)
1*2*3*4+2*3*4*5+3*4*5*6+...+n*(n+1)*(n+2)*(n+3)=?
1*2*3*4+2*3*4*5+3*4*5*6+...+n*(n+1)*(n+2)*(n+3)=?
1*2*3*4+2*3*4*5+3*4*5*6+...+n*(n+1)*(n+2)*(n+3)=?
1*2*3*4+2*3*4*5+..+n(n+1)(n+2)(n+3)=n(n+1)(n+2)(n+3)(n+4)/5
1*2*3*4+2*3*4*5+3*4*5*6+...+n*(n+1)*(n+2)*(n+3)=n*(2n-2)*(2n-1)*(2n)