Question

Find the sum of 2^2 + 4^2+6^2......(2n)^2

Answer 1

factor our 2^2 ... this shouldn't be difficult.

Answer 2

2*2 + 4*4 .........+ 2n*2n

Answer 3

2^2(1^2 + 2^2 +3^2 + ... +n^2)

Answer 4

oh....yup..)

Answer 5

thxx