Question

Factorise 3a^2 - 1 - 2a​

Answer 1

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3a²-1-2a

3a²-2a-1

3a²-(3-1)a-1

3a²-3a+a-1

3a(a-1)+1(a-1)

(a-1)(3a+1)

Answer 2

Answer:

(3a+1)(a-1) is the answer........