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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-

xyy...yzxy...yzzx...y........zzz...x求解行列式.xyy...yzxy...yzzx...y........zzz...x求解行列式.xyy...yzxy...yzz

x^-(y-z)^/(x+y)^-z^x^-(y-z)^/(x+y)^-z^x^-(y-z)^/(x+y)^-z^x^-(y-z)^/(x+y)^-z^=(x+y-z)(x-y+z)/[(x+y+z)

计算（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-z)+y][(x-z)-y]=(x-z)²-y²

计算：(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)=[z+(x-y)][z-(x-y)]=z^2-(x-y)^2

(x+y-z)(x-y+z)=(x+y-z)(x-y+z)=(x+y-z)(x-y+z)=[x+(z-y)][x-(z-y)]=x-(z-y)记得采纳啊

x+y>z0x+y>z0x+y>z0不能.例如,x,y→π-,z=π/2,则x+y>z,0

用乘法公式计算(x+y)(x-y)+(-y-z)(-y+z)+(-x+z)(z+x)用乘法公式计算(x+y)(x-y)+(-y-z)(-y+z)+(-x+z)(z+x)用乘法公式计算(x+y)(x-y

计算：（X+y+z)(-x+y+z)(x-y+z)(x+y-z)计算：（X+y+z)(-x+y+z)(x-y+z)(x+y-z)计算：（X+y+z)(-x+y+z)(x-y+z)(x+y-z)=[(y

（x+y-z）（x-y+z）-（x+y+z）（x-y-z）（x+y-z）（x-y+z）-（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：（x+y-z)(x-y-z)+(y-x+z)(y-x-z)因式分解：（x+y-z)(x-y-z)+(y-x+z)(y-x-

因式分解测试题x(x+y-z)+y(x+y-z)+z(z-x-y)因式分解测试题x(x+y-z)+y(x+y-z)+z(z-x-y)因式分解测试题x(x+y-z)+y(x+y-z)+z(z-x-y)x

(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什么?(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什么?(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什

(x-y+z)²(x-y+z)²(x-y+z)² 

（x+y-z）*（x+y-z)-(x-y+z)*(x-y-z)等于多少（x+y-z）*（x+y-z)-(x-y+z)*(x-y-z)等于多少（x+y-z）*（x+y-z)-(x-y+z)*(x-y-z

计算(x+y+z)(-x+y+z)(x-y+z)(x+y-z)计算(x+y+z)(-x+y+z)(x-y+z)(x+y-z)计算(x+y+z)(-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)如何化简(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)应

方向XYZ方向XYZ方向XYZX--水平横向方向；Y--水平竖向方向；Z--垂直竖向方向.

x(x-y-z)+y(y-x+z)+z(z-x+y)提取公因式法x(x-y-z)+y(y-x+z)+z(z-x+y)提取公因式法x(x-y-z)+y(y-x+z)+z(z-x+y)提取公因式法x（x-

（x+y+z)(-x+y+z)(x-y+z)(x+y-z)怎么算（x+y+z)(-x+y+z)(x-y+z)(x+y-z)怎么算（x+y+z)(-x+y+z)(x-y+z)(x+y-z)怎么算（x+y