Вычислите:449пример ,помогите плииииз
1) =1.2 2) =4.9 3) =2.7 4) =-2.2 =-2.7 =-2.3 =-2.7 =1.7 =1.6 =-2.9 =-2.4 =-1.7
1) 1.2 2) -4.9 -2.7 -2.3 1.6 -2.9