Q6 of 95 Page 87

Find each of the following products:

(9x + 5y) × (4x + 3y)

By using horizontal method,


We have;


= (9x + 5y) × (4x + 3y)


= 9x(4x + 3y) + 5y(4x + 3y)


= 36x2 + 27xy + 20xy + 15y2


= 36x2 + 47xy + 15y2


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