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प्रश्न
Factorise the following expression.
25m2 + 30m + 9
योग
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उत्तर
25m2 + 30m + 9
On writing it as follows:
(5m)2 + 2 × 5m × 3 + (3)2
Using the identity a2 + 2ab + b2 = (a + b)2
= (5m + 3)2
= (5m + 3) (5m + 3)
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