3 4a 8 1 4a 2 1 2a 6 July 8, 2019 16 32 64 128 (6 - 3a)/(8a + 4b) * (4a ^ 2 + 4ab + b ^ 2)/(a - 2) 3) (4a ^ 2)(6a ^ 3) 4) (- 1/2 * b ^ 3)(8b ^ 2)
