Multiply: (x – 4)(x + 5) (a) x2 + 5x - 20, (b) x2 - 4x - 20, (c) x2 - x - 20, (d) x2 + x - 20. Post ID: 3257887 Overview Multiply: (x – 4)(x + 5)(a) x2 + 5x - 20,(b) x2 - 4x - 20,(c) x2 - x - 20,(d) x2 + x - 20.