MA-655

Factorising by grouping

Lower Sec Maths · Secondary 2 · Easy · Factorising by grouping

Factorise completely

12a^2b - 18ab^2 + 6ac - 9bc

.

$3(2a - 3b)(2ab + c)$
$3(2a + 3b)(2ab - c)$
$3(4ab - 3b)(a + c)$
$6(2a - 3b)(ab + c)$

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