a=8, b= 6, d=3, and y=5 The quotient of the difference of the cube of b and the cube of d and the difference of b and d cubed. b³ - d³ ----------- (b - d)³ 6³ - 3³ 216 - 27 189 ---------- = ---------- = ----- = 7 (6 - 3)³ (3)³ 27 Edwin