Question

По действиям пж на листоске))))))

Answer 1

   ...........................=20.5

1)   (2/3)² * (-9)²=2²/3² * (3²)²=2²/3² * 3^4=2*9=18
2)   (0.5)³ : (-0.05)= - 5³/10³ : 5/100= - 5³/10³ * 10²/5= - 5²/10= - 25/10= - 2.5
3)   18 - ( -2.5)=18+2.5=20.5