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प्रश्न
Factorise the following.
x2 + 15x + 26
उत्तर
We have,
x2 + 15x + 26 = x2 + 2x + 13x + 2 × 13
= x(x + 2) + 13(x + 2)
= (x + 2)(x + 13)
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