Odpowiedź:
3⁻¹ + (1/9)⁻² = 1/3 + 9² = 1/3 + 81 = 81 1/3
(2/3)⁻³ - (1/2)⁻² = (3/2)³ - 2² = 27/8 - 4 = 3 3/8 - 4 = 3 3/8 - 3 8/8 = - 5/8
(1/5)⁻³ - 5⁻² × (1/225)⁻⁰°⁵ = 5³ - (1/5)²×[(1/15)²]⁻⁰°⁵ = 125 - 1/25×(1/15)²ˣ⁽⁻⁰°⁵⁾ =
= 125 - 1/25×(1/15)⁻¹ = 125 - 1/25×15 = 125 - 3/5 = 124 2/5 = 124,4
