作业帮（x+y-z）*（x+y-z)-(x-y+z)*(x-y-z)等于多少
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/27 17:03:17
（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)等于多少
你好
（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）²-z²]-[（x-y）²-z²]
=（x+y）²-（x-y）²
=4xy
【数学辅导团】为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!
（x+y-z）*（x+y-z)-(x-y+z)*(x-y-z)
=(x+y)²-2(x+y)z+z²-[(x-y)²-z²]
=x²+2xy+y²-2xz-2yz+z²-x²+2xy-y²+z²
=4xy-2xz-2yz+2z²
如果不懂，请追问，祝学习愉快！
（x+y-z）*（x+y-z)-(x-y+z)*(x-y-z)
=（x＋y）²-2（x＋y）z＋z²-【（x-y）²-z²】
=x²＋2xy＋y²-2xz-2yz＋z²-x²＋2xy-y²＋z²
=4xy-2xz-2yz＋2z²
（x+y-z）（x-y+z）-（x+y+z）（x-y-z）
（x+y-z）*（x+y-z)-(x-y+z)*(x-y-z)等于多少
（x+y+z）(x-y+z)+(y-x+z)(y-x-z)求过程
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分之y+z=y分之z+x=z分之x+y(x+y+z不等于0）,求x+y+z分之x+y-z
分式加减法：已知x+y/z=x+z/y=y+z/x(x+y+z≠0）,求x+y-z/x+y+z
已知x+y/z=x+z/y=y+z/x(x+y+z≠0）,求x+y-z/x+y+z的步骤
已知x+y/z=x+z/y=y+z/x(x+y+z≠0）,求x+y-z/x+y+z的步骤
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)
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)