通分;4x/5y²z与-3z/10x²y;x/x²+3x+2,-x/x²+2x+
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/15 05:05:35
通分;4x/5y²z与-3z/10x²y;x/x²+3x+2,-x/x²+2x+1与-1/3x+6 已知A÷x²-y²/x²+4xy+4y²=x+2y/x+y,当x=2,y=1时,求A的值
通分;2/3a与3/-4ab²
通分;2/3a与3/-4ab²
![通分;4x/5y²z与-3z/10x²y;x/x²+3x+2,-x/x²+2x+](/uploads/image/z/16353108-36-8.jpg?t=%E9%80%9A%E5%88%86%EF%BC%9B4x%2F5y%26%23178%3Bz%E4%B8%8E-3z%2F10x%26%23178%3By%EF%BC%9Bx%2Fx%26%23178%3B%2B3x%2B2%2C-x%2Fx%26%23178%3B%2B2x%2B)
![](http://img.wesiedu.com/upload/d/3d/d3da47c71a89704484af874df1542e94.jpg)
1.(x+y-z)+(x-y+z)-(x-y-z) 2.2x-(3x-2y+3)-(5y-2)
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai
若3x-2y-z=0,x+4y-3z=0,求3x²+y²/4x²-y²+z
(x-3y+2z)²=
已知x²+y²-6x+2y+|z+3|+10=0,求x+z-y的值
已知实数x,y,z满足x²-6xy+10y²+4y+|z²-3z+2|+4=0,求(x+y
x/2=y/3=z/5 x+3y-z/x-3y+z
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
若x-y=6,xy=-8,求代数式(x+y+z)²+(x-y-z)(x-y+z)-2·z(x+y)的值
{2x+3y-4z=-5 x+y+z=6 x-y+3z=10
2X+Y+Z=10,X+2Y+Z=-6,X+Y+2Z=8 5X+4Y-3Y=13,2X-3Y+7Z=19,3X-Y=2X
已知4x-5y+2z=0,x+4y-3z=0,求(x²+y²+z²)/xy+yz+xz