1) 16+7>9+(-2). 25>7 b) -23.1+1.5<-15.3+5.8 -21.6<-9.5
2) a) 12*9>8*6.5 96>52 b) 2.3*8<5.5*12.4 18.4<68.2
3) a^2 >16 2b>10 a^2+2b>16
3*a*b>60 3ab-12>40
25)))...............................................................
1. 3³-23² = 9-529=-520
2. (1\2)³-2² = 1\8 - 4 = - 3 7\8
3. (-2\3)³ * (3\2)² = -8\27 *9\4 = -2\3
4. (-2х\у³)² = 4х² \ у⁶
6. у¹¹ \ у⁸ = у¹¹⁻⁸ = у³
7. х³у \ х⁵ у² = 1 \ х²у