题目内容
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分析:将原式化为(
+
)2009(
-
) 2009(
-
),然后再计算.
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解答:解:原式=(
+
)2009(
-
) 2009(
-
),
=
-
.
故填
-
.
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=
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故填
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点评:本题考查二次根式的运算,关键是对原式进行变形,注意这种方法的掌握.
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