Find the product:
(7x + 2y) × (x + 4y)

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Solution

By horizontal method:

$(7 x + 2 y) \times (x + 4 y) = 7 x (x + 4 y) + 2 y (x + 4 y) = 7 x^{2} + 28 x y + 2 x y + 8 y^{2} = 7 x^{2} + 30 x y + 8 y^{2}$

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Similar questions

Find each of the following products:

$(7 x + 2 y) \times (x + 4 y)$

(x + 4 y + 7 x) - (x + 2 y)

x : y = 8 : 9,

(7 x - 4 y) : (3 x + 2 y) .

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