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प्रश्न
Factorise the following.
y2 + 18x + 65
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उत्तर
We have,
y2 + 18y + 65
= y2 + 13y + 5y + 5 × 13
= y(y + 13) + 5(y + 13)
= (y + 13)(y + 5)
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