2 2y 5 3 4 8 55 July 8, 2019 16 32 64 128 2 2y-5 3/4=8 55 2 + 3 + 4 + 5 + 6 2 5(4-3y)-y+2 3 - 2 5(4y + 2) + 8(2 - 1 25y)
