Find the following products: (7x + 2y) × (x + 4y) - Vidyadip

Question

Find the following products:$ (7x + 2y) × (x + 4y)$

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Answer

$(7x + 2y) × (x + 4y)$
$= 7x(x + 4y) + 2y(x + 4y)$
$ =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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