Find each of the following products: (x2 – 5x + 8) × (x2 + 2)

1.	Find each of the following products: (x2 – 5x + 8) × (x2 + 2)
Answer» By using horizontal method, We have; = (x² – 5x + 8) × (x² + 2) = x²(x² – 5x + 8) + 2(x² – 5x + 8) = x⁴ – 5x³ + 8x²+ 2x² – 10x + 16 = x⁴ – 5x³ + 10x²– 10x +16

Answer»

By using horizontal method,

We have;

= (x² – 5x + 8) × (x² + 2)

= x²(x² – 5x + 8) + 2(x² – 5x + 8)

= x⁴ – 5x³ + 8x²+ 2x² – 10x + 16

= x⁴ – 5x³ + 10x²– 10x +16

Discussion