若x，y满足y＜x-2+2-x+4，化简|y-4|-y2-10y+25．
问题描述：
若x，y满足y＜
+
x-2
+4，化简|y-4|-
2-x
．
y2-10y+25
答
由题意可得：x-2≥0，2-x≥0，联立可得x=2，
y＜
+
x-2
+4可变形为y-4＜
2-x
+
x-2
，
2-x
所以y-4＜0，y＜4，则
|y-4|=4-y，
=
y2-10y+25
=5-y，
(y-5)2
则|y-4|-
=4-y-5+y=-1
y2-10y+25
则可得答案为：-1．