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Factorisation by Common Factors

Factorise the...

Question

Factorise the following algebraic expressions by regrouping terms .
$24 m n - 21 n + 8 m - 7$

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Solution

$24 m n - 21 n + 8 m - 7$

$24 m n + 8 m - 21 n - 7$

$8 m (3 n + 1) - 7 (3 n + 1)$

$(3 n + 1) (8 m - 7)$

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