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Question
Factorise : 3x5 - 6x4 - 2x3 + 4x2 + x - 2
Sum
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Solution
3x5 - 6x4 - 2x3 + 4x2 + x - 2
= 3x4 (x - 2) - 2x2 (x - 2) + 1 (x - 2)
= (x - 2) (3x4 - 2x2 + 1)
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Factorisation by Grouping
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