1) ab³ = -15*(1/3)³ = -15/1 * 1/27= -5/9
ab³ = -15*(-2)³m = -15*(-8) = 120
2)(a/b)² = (0/24)² = 0
(a/b)² = (-8/-1,8)²=1600/81
3)(a +b)³ =(-1,5 +2,1)³ =0,6³ = 0,216
(a +b)³ = (1,7+2,5)³ = 4,2³= 74,088
4) (a +b)²=(4,7 -11,1)² = (-6,4)²=40,96
(a +b)² = (0,7 +0,8)² = 0,9²=0.81
(7/22 +14/11):10/33 = 35/22*33/10=21/4=5,25
1:(1/5 -1/30) = 1:5/30=1:1/6 = 6
14/25 +3/2=0,56 +1,5 =2,06
(7,2 - 6,1)/2,2 = 1,1/2,2 = 0,5