1 2 2y 4 )= 2 3 9y 3 July 8, 2019 16 32 64 128 1 2 + 3 4 4(3y + 1)2 – 27 = (4y + 9) (4y - 9) + 2(5y + 2)(2y – 7) 1 + 2 + 3 + 4 = 10
