Question

2.3+3.4+4.5+---upto n terms =n ( n^2 +6n +11)/3​

Answer 1

n(n2 + 6n + 11)/ 3

.

Since S(1) = 2.3 = (1)(1 + 6 + 11)/3 = 6

n = 1

= k

i.e., S(k) = 2.3 + 3.4 +...+ (k + 1)

Answer 2

Step-by-step explanation:

hope this help you which I have solved in my notes