Find each of the following products:(2x2 – 5y2) × (x2 + 3y2)

1.	Find each of the following products:(2x2 – 5y2) × (x2 + 3y2)
Answer» By using horizontal method, We have; = (2x² – 5y²) × (x² + 3y²) = 2x²(x² + 3y²) – 5y²(x² + 3y²) = 2x⁴ + 6x²y² – 5x²y² – 15y⁴ = 2x⁴ + x²y² – 15y⁴

Answer»

By using horizontal method,

We have;

= (2x² – 5y²) × (x² + 3y²)

= 2x²(x² + 3y²) – 5y²(x² + 3y²)

= 2x⁴ + 6x²y² – 5x²y² – 15y⁴

= 2x⁴ + x²y² – 15y⁴

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