数学
计算:
(1)(-3)
0
-|-
1
0
|+0
-1
-
9
(0)(0-
4
x+3
)-
x
x+1
.
计算:
(1)
4
-2×
(
1
2
)
-1
+|-3|+
(
2
-1)
0
;
(2)
x-2
1-x
÷(x+1-
3
x-1
)
.
(1)计算:(
1
3
)
-1
+(-2)
3
÷|-4|-
9
+(-2009);
(2)化简:(
2
x+1
-
1
x-1
)·(x
2
-1).
计算:
(1)计算:(-1)
2010
-|-7|+
9
×(
5
-π)
0
+(
1
5
)
-1
(2)化简:
(1-
1
a-1
)÷
a
2
-da+d
a
2
-a
.
(1)计算:
(
9
)
5
-
小
6m
+|-5|-(
1
2
)
-2
;
(2)化简:
x
小
-x
x
2
-2x+1
·(1-
1
x
)
.
计算:
(1)
(
1
3
)
-1
+(π-2011
)
0
+
3
27
(2)(
2a
a-1
+
a
1-a
)÷a.
(1)计算:
(
3
-2
)
0
+
16
-(
1
2
)
-1
; (2)(1+
3
a-1
)÷
a+2
a
2
-1
.
计算:
(1)
(
3
)
0
-(
1
2
)
-2
+tan45°
;
(2)
(
a
a
2
-
b
2
-
1
a+b
)÷
b
b-a
.
(1)计算:
12
+|-3|-(
1
2
)
-1
+(-1+
2
)
0
(2)化简:
(a-
2a-1
a
)÷
1-
a
2
a
2
+a
.
计算:
(1)
(
1
3
)
-1
+(π-2012
)
0
+
3
-27
;
(2)化简:
(
1
a+1
+
1
a-1
)÷
a
a+1
+1
.
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