当-1<X<2时,化简丨x-2丨-丨x+1丨
问题描述:
当-1<X<2时,化简丨x-2丨-丨x+1丨
答
-1
丨x-2丨-丨x+1丨
=2-x-(x+1)
=2-x-x-1
=1-2x