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प्रश्न
factorise: 2x2 + xy - 6y2
बेरीज
उत्तर
2x2 + xy - 6y2
= 2x2 + 4xy - 3xy - 6y2
= 2x (x + 2y) - 3y(x + 2y)
= (x + 2y)(2x - 3y)
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Factorisation by Grouping
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