问题 解答题
计算:
x2-5
x-2
-
x
x-2
-
1+x
2-x
=______.
答案

原式=

x2-5
x-2
-
x
x-2
+
1+x
x-2

=

x2-5-x+1+x
x-2

=

(x+2)(x-2)
x-2

=x+2.

故答案为:x+2.

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