Răspuns:
Explicație pas cu pas:
a) 12·(1,1²+0,9+2)=12·(1,21+0,9+2)=12·4,11=49,32
b) 0,3·(2,6+0,2·0,17)-0,008=0,3·(2,6+0,0034)-0,008=
=0,3·2,6034-0,008=0,78102-0,008=0,77302
c) 0,3²·0,3³+0,2·0,4+5=0,09·0,027+0,08+5=0,00243+5,08=5,08243
d) 1,02·3,5+6·(2,1^0+1,9+0,3·10²)=3,57+6·(1+1,9+30)=3,57+6·32,9=3,57++197,4= 200,97
e) [2·(4,5+5,1·0,06)+23,9-0,01²]·7-18,09= [2·(4,5+0,306)+23,9-0,0001]·7-18,09= [2·4,806+23,8999]·7-18,09= (9,612+23,8999)·7-18,09=
=33,5119·7-18,09=234,5833-18,09=216,4933
