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Secondary 1 | Maths
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16 = 4 × 4 = 4² = (2 + 2)²
25 = 5 × 5 = 5² = (3 + 2)²
36 = 6 × 6 = 6 = (4 + 2)²
49 = 7 × 7 = 7² = (5 + 2)²
Next two terms :
8² = 64
9² = 81
General formula for the n th term = (n + 2)²
25th term = (25 + 2)² = 27² = 729
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