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प्रश्न
Factorise.
x2 + 9x + 18
बेरीज
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उत्तर
x2 + 9x + 18
= x2 + 6x + 3x + 18
= x (x + 6) + 3 (x + 6)
= (x + 6) (x + 3)
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