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प्रश्न
factorise: a2 - 5a+ 6
योग
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उत्तर
a2 - 5a+ 6
= a2 - 3a - 2a + 6
= a(a - 3) - 2(a - 3)
= (a - 3)(a - 2)
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Factorisation by Grouping
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