x-y/(z-x)(z-y) 一y-z/(x-y)(x-z) ＋z-x/(y-z)(y-x)
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/31 02:35:46
x-y/(z-x)(z-y)一y-z/(x-y)(x-z)＋z-x/(y-z)(y-x)x-y/(z-x)(z-y)一y-z/(x-y)(x-z)＋z-x/(y-z)(y-x)x-y/(z-x)(z-
x-y/(z-x)(z-y) 一y-z/(x-y)(x-z) ＋z-x/(y-z)(y-x)
x-y/(z-x)(z-y) 一y-z/(x-y)(x-z) ＋z-x/(y-z)(y-x)
x-y/(z-x)(z-y) 一y-z/(x-y)(x-z) ＋z-x/(y-z)(y-x)
原式= x-y/(z-x)(z-y)一y-z/(y-x)(z-x)一z-x/(z-y)(y-x) （这一步是把分母上的符号统一,便于同分）
= (x-y)(y-x)—(y-z)(z-y)—(z-x)(z-x) (分子)
———————————————— （分数线,这样你看的时候方便点）
(z-x)(z-y)(y-x)
-x^2+2xy-y^2+y^2-2yz+z^2-z^2+2xz-x^2 （x^2就是x的平方）
= ——————————————————
(z-x)(z-y)(y-x)
2xy-2yz+2xz-2x^2 (化简)
= ——————————————————
(z-x)(z-y)(y-x)
2x(y-x)-2z(y-x)
= ——————————————————
(z-x)(z-y)(y-x)
2(y-x)(x-z)
= ——————————————————
(z-x)(z-y)(y-x)
2 2
= ———— = ————
-（z-y） y-z
额……笔记本码字好麻烦~.
x-y/(z-x)(z-y) 一y-z/(x-y)(x-z) ＋z-x/(y-z)(y-x)
x^-(y-z)^/(x+y)^-z^
计算（x+y-z)(x-y-z)
计算：(x-y+z)(-x+y+z)
(x+y-z)(x-y+z)=
(x一2y+z)(-x+2y+z)(计算)
x y y ...y z x y ...y z z x ...y ........z z z ...x 求解行列式.
x+y>z 0
用乘法公式计算(x+y)(x-y)+(-y-z)(-y+z)+(-x+z)(z+x)
计算：（X+y+z)(-x+y+z)(x-y+z)(x+y-z)
（x+y-z）（x-y+z）-（x+y+z）（x-y-z）
因式分解 ：（x+y-z)(x-y-z)+(y-x+z)(y-x-z)
因式分解测试题x(x+y-z)+y(x+y-z)+z(z-x-y)
(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什么?
(x-y+z)²
（x+y-z）*（x+y-z)-(x-y+z)*(x-y-z)等于多少
计算(x+y+z)(-x+y+z)(x-y+z)(x+y-z)
如何化简(x+y+z)(x+y-z)(x-y+z)(-x+y+z)