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> 计算:(1x-1+1x+1)÷3x1-x2=______.-数学
计算:(1x-1+1x+1)÷3x1-x2=______.-数学
题目简介
计算:(1x-1+1x+1)÷3x1-x2=______.-数学
题目详情
计算:
(
1
x-1
+
1
x+1
)÷
3x
1-
x
2
=______.
题型:解答题
难度:中档
来源:不详
答案
原式=[
class="stub"x+1
(x-1)(x+1)
+
class="stub"x-1
(x-1)(x+1)
]•
(1-x)(1+x)
3x
=
class="stub"2x
(x-1)(x+1)
•
(1-x)(1+x)
3x
=-
class="stub"2
3
.
故答案是:-
class="stub"2
3
.
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题目简介
计算:(1x-1+1x+1)÷3x1-x2=______.-数学
题目详情
答案
=
=-
故答案是:-