Question

помогите плиз!!!!!!!!!!

Answer 1

4⁻¹*8²(а⁻³)³:(8а⁻³)²=2⁻²*(2³)²*а⁻⁹:(2³)²*а⁻⁶=2⁽⁻²⁺⁶⁻⁶⁾*а⁽⁻⁹⁺⁶⁾=2⁻²а⁻³=а⁻³/4=0,25а⁻³