5x-2x-2>0 则 根号下4x-4x+1 + 2|x-2| = ()
问题描述:
5x-2x-2>0 则 根号下4x-4x+1 + 2|x-2| = ()
A.4x-5 B.-3 C.3 D.5-4x 单选
答
2x-5x+20 √(4x-4x+1)+2|x-2| =2x-1+4-2x =3 C
5x-2x-2>0 则 根号下4x-4x+1 + 2|x-2| = ()
A.4x-5 B.-3 C.3 D.5-4x 单选
2x-5x+20 √(4x-4x+1)+2|x-2| =2x-1+4-2x =3 C