Odpowiedź:
(1/81)⁵ × 27⁸ = 81⁻⁵ × 27⁸ = (3⁴)⁻⁵ × (3³)⁸ = 3⁻²⁰ × 3²⁴ = 3⁻²⁰ ⁺ ²⁴ = 3⁴ = 81
125⁷/25¹⁰ = (5³)⁷/(5²)¹⁰ = 5²¹/5²⁰ = 5²¹⁻²⁰ = 5¹ = 5
2⁵ × 4³ ÷ 8³ = 2⁵ × (2²)³ ÷ 8³ = 2⁵ × 2⁶ ÷ (2³)³ = 2⁵⁺⁶ ÷ 2⁹ = 2¹¹ ÷ 2⁹ = 2¹¹⁻⁹ =
= 2² = 4
125⁵ ÷ (25⁴ × 5⁶) = (5³)⁵ ÷ [ (5²)⁴ × 5⁶ ] = 5¹⁵ ÷ ( 5⁸ × 5⁶ ) = 5¹⁵ ÷ 5⁸⁺⁶ =
= 5¹⁵ ÷ 5¹⁴ = 5¹⁵⁻¹⁴ = 5¹ = 5
