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> 计算:(1)38-218+532;(2)7a-3a1a+2aa3;(3)2bab5•(-23a3b)÷3ba.-数学
计算:(1)38-218+532;(2)7a-3a1a+2aa3;(3)2bab5•(-23a3b)÷3ba.-数学
题目简介
计算:(1)38-218+532;(2)7a-3a1a+2aa3;(3)2bab5•(-23a3b)÷3ba.-数学
题目详情
计算:
(1)
3
8
-2
18
+5
32
;
(2)
7
a
-3a
1
a
+
2
a
a
3
;
(3)
2
b
a
b
5
•(-
2
3
a
3
b
)÷3
b
a
.
题型:解答题
难度:中档
来源:不详
答案
(1)原式=3×2
2
-2×3
2
+5×4
2
=6
2
-6
2
+20
2
=20
2
;
(2)原式=7
a
-3
a
+2
a
=6
a
;
(3)原式=
class="stub"2
b
•(-
class="stub"2
3
)×
class="stub"1
3
a
b
5
•
a
3
b•
class="stub"a
b
=-
class="stub"4
9b
a
5
b
5
=-
class="stub"4
9
a
2
b
ab
.
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题目简介
计算:(1)38-218+532;(2)7a-3a1a+2aa3;(3)2bab5•(-23a3b)÷3ba.-数学
题目详情
(1)3
(2)7
(3)
答案
=6
=20
(2)原式=7
=6
(3)原式=
=-
=-