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> 计算:(1)aa-b+bb-a(2)(a2b-cd3)3÷2ad3-(c2a)2(3)a2a-1-a-1.-数学
计算:(1)aa-b+bb-a(2)(a2b-cd3)3÷2ad3-(c2a)2(3)a2a-1-a-1.-数学
题目简介
计算:(1)aa-b+bb-a(2)(a2b-cd3)3÷2ad3-(c2a)2(3)a2a-1-a-1.-数学
题目详情
计算:
(1)
a
a-b
+
b
b-a
(2)(
a
2
b
-c
d
3
)
3
÷
2a
d
3
-
(
c
2a
)
2
(3)
a
2
a-1
-a-1
.
题型:解答题
难度:中档
来源:不详
答案
(1)原式=
class="stub"a
a-b
-
class="stub"b
a-b
=
class="stub"a-b
a-b
=1;
(2)原式=-
a
6
b
3
c
3
d
9
•
d
3
2a
-
c
2
4
a
2
=
a
5
b
3
2
c
3
d
6
-
c
2
4
a
2
=
2
a
7
b
3
-
c
3
d
6
4
a
2
c
3
d
6
;
(3)原式=
a
2
a-1
-
(a+1)(a-1)
a-1
=
a
2
-(
a
2
-1)
a-1
=
class="stub"1
a-1
.
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题目简介
计算:(1)aa-b+bb-a(2)(a2b-cd3)3÷2ad3-(c2a)2(3)a2a-1-a-1.-数学
题目详情
(1)
(2)(
(3)
答案
(2)原式=-
(3)原式=