1) (0,2)⁻⁵ = (1/5)⁻⁵ = 5⁵ = 3125;
3) (-0,5)⁻³ = (-1/2)⁻³ = (-2)³ = -8;
5) -(-0,3)⁻² = -( -3/10)⁻² = -(-10/3)² = -100/9 = -11 1/9;
7) (1,2)⁻³ = (12/10)⁻³ = (6/5)⁻³ = (5/6)³ = 125/216.
Ответ: