Completely factorise into linear factors.

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

Completely factorise x3+3x2−x−3x^{3}+3x^{2}-x-3 into linear factors. (a) (x+3)(x+1)(x+1)(x+3)(x+1)(x+1) (b) (x−3)(x+1)(x−1)(x-3)(x+1)(x-1) (c) (x+3)(x+1)(x−1)(x+3)(x+1)(x-1) (d) (x+3)(x2−3)(x+3)(x^{2}-3)

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