问题 解答题
计算:
(1)2-
1
2
+
(-4)0
2
+
1
2
-1
-
(1-
5
)
0
   
(2)log225•log3
1
16
•log5
1
9
答案

(1)=2-

1
2
+
1
2
+
1
2
-1
-
1

=2-

1
2
+2-
1
2
+
2
+1-1

=2•2-

1
2
+
2

=

2
+
2
=2
2
(6分)

(2)=log252•log32-4•log53-2

=

2lg5
lg2
(-4)lg2
lg3
(-2)lg3
lg5
=16(6分)

多项选择题
选择题