计算:ba•cb=______.

计算:ba•cb=______.

题型:填空题难度:一般来源:不详
计算:
b
a
c
b
=______.
答案
原式=
bc
ab
=
c
a
,故答案为
c
a
举一反三
(1)
b
a
a
b

(2)
b
a
b
a

(3)
2
xy
x
8

(4)
5y2
4x
8x2
15y3

(5)
b
9a2
•(-63a2b)
(6)-
5ab
18xy
9x2y3
10a2b

(7)-
18a2b2
7cd
÷
9ab3
7c2d4

(8)-
b2c
2a2
÷(
-bc2
4a
)

(9)
3a
4b
÷(-9a2b)
(10)
4x4y2
15a3
÷
-8x2y2
35a2
题型:解答题难度:一般| 查看答案
(1)
x+y
x-y
1
(x+y)2

(2)
a-b
a2+ab
÷
ab-a2
a2b2-a4

(3)
x2+7x-8
4x-x3
x2-4
3x+24

(4)
x2+2xy+y2
xy-y2
÷
xy+y2
x2-2xy+y2

(5)x÷
1
x
•x
(6)
x3+x2
1-x2
÷x•
1
x

(7)9a2
3a
4b
•4ab2
(8)
a-4
a2+4a+4
a2+5a+6
a2-a-2
÷
a+3
a-2

(9)
x2+xy
x2-xy
÷(x-y)•
x2-xy
xy

(10)(-
a2
b
)2
(
b
a
)3
(
1
ab
)4

(11)[
(x-y)2
x+y
]3
(
x2
y2-x2
)3

(12)(
x-1
x2-x-2
)2
÷
x2-2x+1
2-x
÷(
1
x2+x
)2
题型:解答题难度:一般| 查看答案
ab3
a3b2
÷(-
4b
a
)2
=______.
题型:填空题难度:一般| 查看答案
下列运算正确的是(  )
A.
4y
3x
2y
3x
=
8y2
3x
B.
4
x
÷
3
x
=
3
4
C.
2a-4
2a-3
+
3a-8
3-2a
=
4-a
2a-3
D.
1
x+1
-
1
x-1
=
2
x2-1
题型:单选题难度:一般| 查看答案
下列各计算过程中,正确的是(  )
A.5xy÷
2xy2
5
=5xy•
2
5xy2
=
2
y
B.a÷b•
1
b
=a÷1=a
C.
3
2x
5
2y
=
3
2x
2y
5
=
3y
5x
D.
3x2y
a
÷3ax
y=
3x2y
a
1
3ax
y=
xy2
a2
题型:单选题难度:简单| 查看答案
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