If (\[(2x^{2} + 3x - 5)\](x + 2) =ax^{3} + bx^{2} + cx + d, Then ac - bd = ?

Answer: 
72
If $(\[(2x^{2} + 3x - 5)\](x + 2) =ax^{3} + bx^{2} + cx + d$, Then ac - bd = ?