Question

Решите выражение 18* (1/9)^2-20*1/9

Answer 1

18*(1/9)^2-20*1/9=-2

Answer 2

18* (1/9)^2-20*1/9=18/1*1/81-20/1*1/9=18/81-20/9=(18-180)/81=-(162/81)=-2