已知y小于根号下x-4+根号下4-x+1化简y-1分之根号下y的平方-2y+1+1-y的绝对值+y的值

分类: 作业答案 • 2023-01-10 15:08:33

问题描述：

答

∵y∴x-4≥0,4-x≥0
∴x-4=0,x=4
∴y∴y-1∴√(y²-2y+1)/(y-1)+|1-y|+y
=√(y-1)²/(y-1)+|y-1|+y
=|y-1|/(y-1)+|y-1|+y
=-(y-1)/(y-1)-(y-1)+y
=-1-y+1+y
=0