а) 4.1(67)=4.1676767676767...
4.17>4.1(67)
б) (4/3)^2=16/9<2.5</p>
4/3 < √2.5
в) 2.8^2=7.84<8</p>
√8 >2.8
г) 3+√5.7 и 5,4
√5.7 и 2,4
2.4^2=5.76>5.7
3+√5.7<5.4</p>
д)7.(9)=7.99999999999999999....
8>7.(9)
е) 6.26(9)=6.26999999999999999999999999999...
6.27>6.26(9)