Question

factorise it.please it is urgent. solve quick
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Answer 1

Step-by-step explanation:

=> 3a^2- b^2-c^2+2ab-2bc+2ac

=> 4a^2-a^2-b^2-c^2+2ab-2bc-2ac

=> 4a^2-(a^2+b^2+c^2-2ab+2bc-2ac)

=> (2a)^2-(a-b-c)^2

=> (2a+a-b-c) (2a-a+b+c)

=> (3a-b-c) (a+b+c)

Hope it helps you....