Factorize: $7 x^{2} - 21 x + 2 x y - 6 y$

(x + 3) (x + 7 y)

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(x - 3) (7 x + 2 y)

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(x - 6) (x + 2 y)

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(x - 6) (x + 3 y)

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Solution

The correct option is B $(x - 3) (7 x + 2 y)$
$7 x^{2} - 21 x + 2 x y - 6 y$
$= 7 x (x - 3) + 2 y (x - 3)$
$= (x - 3) (7 x + 2 y)$

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