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प्रश्न
Factorise the following expression:
7a2 + 14a
योग
उत्तर
7a2 = 7 × a × a
14a = 2 × 7 × a
The common factors are 7 and a.
∴ 7a2 + 14a = (7 × a × a) + (2 × 7 × a)
= 7 × a (a + 2)
= 7a (a + 2)
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