18×(1/9)2 степень -20× 1/9

Question

18×(1/9)2 степень -20× 1/9

Comments

2 слагаемое без скобок

Answer 1

 18· (1/9)² - (20·1/9) = 18* 1/81 - 20/9 = 18/81 -20/9 = 2/9 - 20/9 = - 18/9 = 
= -2 
ответ: -2

Answer 2

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