Question

find the sum of n term of an ap root 2, root 8, root 18, root 32​

Answer 1

Answer:

sum of n terms= root two +n-1(root 8- root 2

Answer 2

Answer:

AP

= √2, √8, √18 ,√32 ........

can be also written as

√2, 2√2, 3√2, 4√2,........

here

a = √2 and common difference = √2

Sn = n/2(2a + (n-1)(d))

Sn = n/2(2(√2) + (n-1)(√2))

Sn = (√2)n/2 x ( 2 + n - 1)

Sn = n/√2 x (n + 1)

Sn = n(n+1)/√2

hope this will help you