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> 化简:a2-1a2+6a+9÷(a+1)×a2-9a-1.-数学
化简:a2-1a2+6a+9÷(a+1)×a2-9a-1.-数学
题目简介
化简:a2-1a2+6a+9÷(a+1)×a2-9a-1.-数学
题目详情
化简:
a
2
-1
a
2
+6a+9
÷(a+1)×
a
2
-9
a-1
.
题型:解答题
难度:中档
来源:不详
答案
原式=
(a+1)(a-1)
(a+3
)
2
÷(a+1)×
(a+3)(a-3)
a-1
=
(a+1)(a-1)
(a+3
)
2
•
class="stub"1
a+1
•
(a+3)(a-3)
a-1
=
class="stub"a-3
a+3
.
上一篇 :
求值:(1)1+xx2+x-2÷x2-1x+2,其中x
下一篇 :
将分式化简得,则x应满足的条件
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题目简介
化简:a2-1a2+6a+9÷(a+1)×a2-9a-1.-数学
题目详情
答案
=
=