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प्रश्न
factorise: a2 +5a - 6
बेरीज
उत्तर
a2 +5a - 6
= a2 + 6a - a - 6
= a (a + 6) - 1 (a + 6)
= (a + 6) (a - 1)
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Factorisation by Grouping
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