2n 4 6 9 4 2n 1 ) July 8, 2019 16 32 64 128 2n 4 6 9 4 2n 1 ) n 1 2 2n 4 6 9 4 2n 1 What is the value of n in the equation 2n 4 6 9 4 2n 1 ) n 2 + 4 + 6 + ... + 2n = n(n + 1)
