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प्रश्न
Factorise.
y2 + 24y + 144
योग
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उत्तर
y2 + 24y + 144
= y2 + 12y + 12y + 144 ...[∵ 12 + 12 = 24 and 12 × 12 = 144]
= y(y + 12) + 12(y + 12)
= (y + 12)(y + 12)
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