Question

Factorise : 2a^3 + a^3 - 2a - 1

Answer 1

Answer:

I think your question is incorrect.

Step-by-step explanation:

because a polynomial should be in the form of a cube + a square + a + constant

Answer 2

Step-by-step explanation:

I am assuming that you have not made any mistake in writing question.

=2a³ + a³ - 2a - 1

= 3a³ - 2a - 1

{ now you have to proceed this step by hit and trial and you will get that on putting 1 in this polynomial it becomes zero so it must be its root and it also implies that (a - 1 ) is its factor.}

= ( a-1)(3a² + 3a +1)