(x-y+z)(x+y+z)等于多少?
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/26 03:39:30
(x-y+z)(x+y+z)等于多少?(x-y+z)(x+y+z)等于多少?(x-y+z)(x+y+z)等于多少?(x-y+z)(x+y+z)=[(x+z)-y][(x+z)+y]=(x+z)
(x-y+z)(x+y+z)等于多少?
(x-y+z)(x+y+z)等于多少?
(x-y+z)(x+y+z)等于多少?
(x-y+z)(x+y+z)
=[(x+z)-y][(x+z)+y]
=(x+z)²-y²
=x²+z²-y²+2xz
把x+z看作一个整体,这个式子就是个平方差,即(x+z)^2-y^2=x^2-y^2+z^2+2xz
(x+y-z)*(x+y-z)-(x-y+z)*(x-y-z)等于多少
(x-y+z)(x+y+z)等于多少.
(x-y+z)(x+y+z)等于多少?
(x+y-z)乘以(x-y-z)等于?
(x-y-z)乘以(z-x+y)等于?
z,x,y,等于多少?
(x+y+z)²-(x-y-z)²等于多少要步骤
(x+y-z)(x-y+z)=等于多少
如果30/7=x+ 1/(y+1/z)那么x+y+z等于多少
(x+y+z)(x+y-z)等于多少
(x+y-z)(x-y+z)-(x+y+z)(x-y-z)
(x+y+z)(x-y+z)+(y-x+z)(y-x-z)求过程
(x-y-z)(x-y-z)(x-y-z)等于多少?
(x-y-z)(x-y=z)等于多少?错了,应该是(x-y-z)(x-y+z)不好意思
(x-y+z)²等于多少
(x+y+z)^4等于多少
(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什么?
z分之x+y等于y分之x+z等于x分之y+z(x+y+z不等于零)求x+y+z分之x+y-z的值