1.

Find each of the following products:(2x + 5) × (4x – 3)

Answer»

By using horizontal method, 

We have; 

= (2x + 5) × (4x - 3) 

= 2x (4x – 3) + 5 (4x – 3) 

= 8x2 - 6x + 20x – 15 

= 8x2 + 14x - 15



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