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प्रश्न
Factorise : 2a - 4b - xa + 2bx
बेरीज
उत्तर
2a - 4b - xa + 2bx
= 2 (a - 2b) - x (a - 2b)
= (a - 2b) (2 - x)
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Factorisation by Grouping
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