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> 化简求值:a-ba÷(a-2ab-b2a),其中a=2010,b=2009.-数学
化简求值:a-ba÷(a-2ab-b2a),其中a=2010,b=2009.-数学
题目简介
化简求值:a-ba÷(a-2ab-b2a),其中a=2010,b=2009.-数学
题目详情
化简求值:
a-b
a
÷(a-
2ab-
b
2
a
),其中a=2010,b=2009.
题型:解答题
难度:中档
来源:牡丹江
答案
class="stub"a-b
a
÷(a-
2ab-
b
2
a
)
=
class="stub"a-b
a
÷(
a
2
a
-
2ab-
b
2
a
)
=
class="stub"a-b
a
÷
a
2
-2ab+
b
2
a
=
class="stub"a-b
a
×
class="stub"a
a
2
-2ab+
b
2
=
class="stub"a-b
a
×
class="stub"a
(a-b
)
2
=
class="stub"1
a-b
.
当a=2010,b=2009时,原式=
class="stub"1
2010-2009
=1.
上一篇 :
先化简,再求值.a2-1a-2•(1-1a-
下一篇 :
先化简分式:1-a-1a÷a2-1a2+2a,
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题目简介
化简求值:a-ba÷(a-2ab-b2a),其中a=2010,b=2009.-数学
题目详情
答案
=
=
=
=
=
当a=2010,b=2009时,原式=