I have bunch of these kind of tasks at school but i dont know where to start. If someone here could show me how to complete tasks like that so i could do other tasks too.
Prove that, 1x2+2x3+3x4+...+n(n+1)=n(n+1)(n+2)
------------
3
I have bunch of these kind of tasks at school but i dont know where to start. If someone here could show me how to complete tasks like that so i could do other tasks too.
Prove that, 1x2+2x3+3x4+...+n(n+1)=n(n+1)(n+2)
------------
3