Question

вычислите 7(2), 0,4(2), 1,2(2), (1/3)2, (2 2/9)2

Answer 1

7(2)=7²=49
, 0,4(2)=0,16
, 1,2(2)=1/4
, (1/3)2=1/9
, (2 2/9)2=4  76/81