若-2x2+5x-2>0,则4x2−4x+1+2|x−2|等于( ) A.4x-5 B.-3 C.3 D.5-4x
问题描述:
若-2x2+5x-2>0,则
+2|x−2|等于( )
4x2−4x+1
A. 4x-5
B. -3
C. 3
D. 5-4x
答
由-2x2+5x-2>0得:
<x<2.1 2
∴则
+2|x−2|
4x2−4x+1
=|2x-1|+2|x-2|
=2x-1+2(2-x)
=3.
故选C.