pops6784 pops6784

20-07-2019
Mathematics

contestada

sum of first nth term of the seris 2^2+4^2+6^2+8^2+.........n terms is

sum of first nth term of the seris 22426282n terms is class=

Respuesta :

riyadh65 riyadh65

27-07-2019

Answer:

(2/3)n(n+1)(2n+1)

Step-by-step explanation:

First you have to find the general term formula which is here (2k)^2 which is equal to 4k^2. Sum(k=1 to n) of 4k^2=4•n(n+1)(2n+1)/6

simplified to (2/3)n(n+1)(2n+1)

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