+0  
 
0
133
1
avatar

The closed form sum of $$12 \left[ 1^2 \cdot 2 + 2^2 \cdot 3 + \ldots + n^2 (n+1) \right]$$


for $n \geq 1$  is $n(n+1)(n+2)(an+b).$  Find $an + b.$

 Mar 16, 2021
 #1
avatar+32405 
+1

See https://web2.0calc.com/questions/help-intermediate-algebra#r1 

 Mar 16, 2021

21 Online Users

avatar
avatar