Question

what is the sum of n terms of series
√2+√8+√18+√32+----​

Answer 1

Answer:

The series can be rewritten as

2

+2

2

+3

2

+4

2

+.....

So the nth sum S

n

=

2

×(1+2+3+.....+n)

=

2

2

×n×(n+1)

=

2

n(n+1)

Hope It helps you allll.