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How do you factor $3 x^{2} + 21 x$ $3x^2+21x$ ?

1 Answer

May 7, 2016

$3 x (x + 7)$ $3x (x+7)$

Explanation:

take 3x as common as it is divisible by both
so $3 x (x + 7)$ $3x (x+7)$

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