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प्रश्न
Factorise the following by grouping the terms:
15xy - 9x - 25y + 15
योग
उत्तर
15xy - 9x - 25y + 15
= (15xy - 9x) - (25y + 15)
= 3x(5y - 3) - 5(5y - 3)
= (5y - 3)(3x - 5).
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Factorisation by Grouping
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