计算:(1)2x2y3mn2•5m2n4xy2÷5xym3n(2)(a2-b)•(c2-ab)÷(bca)(3)(2x3y)2•(3y4x)3(4)(a-bab

计算:(1)2x2y3mn2•5m2n4xy2÷5xym3n(2)(a2-b)•(c2-ab)÷(bca)(3)(2x3y)2•(3y4x)3(4)(a-bab

题型:解答题难度:一般来源:不详
计算:
(1)
2x2y
3mn2
5m2n
4xy2
÷
5xym
3n

(2)(
a2
-b
)•(
c2
-ab
)÷(
bc
a

(3)(
2x
3y
)
2
•(
3y
4x
)
3

(4)(
a-b
ab
)
3
÷(b-a)2•(
ab
b-a
)
2

(5)(-
2a
b2
2•(
b2
4a4
3
(6)(
a
b
)÷(-ab4)•(
b2
a
)
3
答案
(1)原式=
2x2y
3mn2
5m2n
4xy2
3n
5xym

=
5xm
6ny
3n
5xym

=
1
2y2


(2)原式=
ac2
b2
a
bc

=
a2c
b3


(3)原式=
4x2
9y2
27y3
64x3

=
3y
16x


(4)原式=
(a-b)3
a3b3
1
(a-b)2
a2b2
(a-b)2

=
a-b
a3b3
a2b2
(a-b)2

=
1
(a-b)ab


(5)原式=
4a2
b4
b6
64a12

=
b5
16a10


(6)原式=
a
b
1
-ab4
b6
a3

=
1
-b5
b6
a3

=-
b
a3
举一反三
计算
a-1
a-b
b2-a2
1-a
的结果是(  )
A.a+bB.-a+bC.a-bD.-a-b
题型:单选题难度:一般| 查看答案
计算:
x2
3y
9y3
x4
=______.
题型:填空题难度:一般| 查看答案
化简:
x2-1
x+1
÷
x2-2x+1
x2-x
题型:解答题难度:一般| 查看答案
化简:x÷
x
y
y
x
的结果为______.
题型:填空题难度:一般| 查看答案
下列计算正确的是(  )
A.(
a
b
)
m
=
am
bm
B.(
a+b
a
)
2
=
a2+b2
a2
C.(-
y3
x2
)
3
=
y9
x6
D.(
2x
3y
)
4
=
8x4
12y4
题型:单选题难度:简单| 查看答案
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