问题 解答题
计算:
(1)
2lg2+lg3
1+
1
2
lg0.36+
1
3
lg8
       (2)0.0081
1
4
+(4-
3
4
)2+(
8
)
-
4
3
-16-0.75
答案

(1)

2lg2+lg3
1+
1
2
lg0.36+
1
3
lg8
=
lg12
1+lg0.6+lg2
=
lg12
lg12
=1

(2)0.0081

1
4
(4-
3
4
)
2
 +(
8
)
-
4
3
-16-0.75=0.3+
1
8
+
1
4
-
1
8
=0.55

解答题