问题
解答题
化简
|
答案
-(1-x)2
=|1-x|-x2-8x+16
=|1-x|-|x-4|(x-4)2
当x<1时,原式=(1-x)-(4-x)=-3;
当1≤x≤4时,原式=(x-1)-(4-x)=2x-5;
当x>4时,原式=(x-1)-(x-4)=3;
故答案为:原式=
.-3(x<1) 2x-5(1≤x≤4) 3(x>4)
化简
|
-(1-x)2
=|1-x|-x2-8x+16
=|1-x|-|x-4|(x-4)2
当x<1时,原式=(1-x)-(4-x)=-3;
当1≤x≤4时,原式=(x-1)-(4-x)=2x-5;
当x>4时,原式=(x-1)-(x-4)=3;
故答案为:原式=
.-3(x<1) 2x-5(1≤x≤4) 3(x>4)