Factorise : 2a^3 + a^3 - 2a - 1
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Answered by
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
Answered by
1
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)
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