Explanation:
a) 1² + 2³ + 3⁴ = ?
→ 1² + 2³ + 3⁴
→ (1 × 1) + (2 × 2 × 2) + (3 × 3 × 3 × 3)
→ 1 + 8 + 81 = 90
b) 4² × 2⁴ = ?
→ 4² × 2⁴
→ (4 × 4) × (2 × 2 × 2 × 2)
→ 16 × 16 = 256
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