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> (1)化简:a+b5ab•10ab2a2-b2;(2)解分式方程:1x-3=2+x3-x.-数学
(1)化简:a+b5ab•10ab2a2-b2;(2)解分式方程:1x-3=2+x3-x.-数学
题目简介
(1)化简:a+b5ab•10ab2a2-b2;(2)解分式方程:1x-3=2+x3-x.-数学
题目详情
(1)化简:
a+b
5ab
•
10a
b
2
a
2
-
b
2
;
(2)解分式方程:
1
x-3
=2+
x
3-x
.
题型:解答题
难度:中档
来源:不详
答案
(1)原式=
class="stub"a+b
5ab
•
10a
b
2
(a+b)(a-b)
=
class="stub"2b
a-b
;
(2)方程的两边同乘(x-3),
得:1=2(x-3)-x,
解得:x=7.
检验:把x=7代入(x-3)=4≠0,即x=7是原分式方程的解.
则原方程的解为:x=7.
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题目简介
(1)化简:a+b5ab•10ab2a2-b2;(2)解分式方程:1x-3=2+x3-x.-数学
题目详情
(2)解分式方程:
答案
(2)方程的两边同乘(x-3),
得:1=2(x-3)-x,
解得:x=7.
检验:把x=7代入(x-3)=4≠0,即x=7是原分式方程的解.
则原方程的解为:x=7.