Sum
factorise: 14x2 + x - 3
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Solution
14x2 + x - 3
= 14x2 + 7x - 6x - 3
= 7x (2x + 1) - 3(2x + 1)
= (2x + 1) (7x - 3)
Concept: Factorisation by Grouping
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