(2x2 – 1) × (4x3 + 5x2)= 2x2 (4x3 + 5x) – 1 (4x3 + 5x2)= 8x5 + 10x3 – 4x3 – 5x2= 8x5 + 6x3 – 5x2

Q15 of 116 Page 6

Multiply:

(2x² – 1) × (4x³ + 5x²)

= 2x² (4x³ + 5x) – 1 (4x³ + 5x²)

= 8x⁵ + 10x³ – 4x³ – 5x²

= 8x⁵ + 6x³ – 5x²

Multiply:

Find the following products and verify the result for x=-1, y=-2: