y3-y2-y+1/y2-1 × x2-1/x3-x2-x+1 × x-1/y-1化简

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/16 18:30:25
y3-y2-y+1/y2-1×x2-1/x3-x2-x+1×x-1/y-1化简y3-y2-y+1/y2-1×x2-1/x3-x2-x+1×x-1/y-1化简y3-y2-y+1/y2-1×x2-1/x3

y3-y2-y+1/y2-1 × x2-1/x3-x2-x+1 × x-1/y-1化简
y3-y2-y+1/y2-1 × x2-1/x3-x2-x+1 × x-1/y-1
化简

y3-y2-y+1/y2-1 × x2-1/x3-x2-x+1 × x-1/y-1化简
拜托加上括号好不好?
(y³-y²-y+1)/(y²-1) × (x²-1)/(x³-x²-x+1) × (x-1)/(y-1)
=[y(y²-1)-(y²-1)]/(y²-1)× (x²-1)/[x(x²-1)-(x²-1)]× (x-1)/(y-1)
=(y-1)× [1/(x-1)]× (x-1)/(y-1)
=1

题目表达模糊