化简下列式子-(7X-Y-2Z)-{[4X-(X-Y-Z)-3X+Z]-X}

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化简下列式子-(7X-Y-2Z)-{[4X-(X-Y-Z)-3X+Z]-X}
化简下列式子
-(7X-Y-2Z)-{[4X-(X-Y-Z)-3X+Z]-X}

化简下列式子-(7X-Y-2Z)-{[4X-(X-Y-Z)-3X+Z]-X}

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-(7X-Y-2Z)-{[4X-(X-Y-Z)-3X+Z]-X}
=-7X+Y+2Z-4X+X-Y-Z+3X-Z+X
=(-7X-4X+3X+X+X)+(Y-Y)+(2Z-Z-Z)
=-6X
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化简下列式子-(7X-Y-2Z)-{[4X-(X-Y-Z)-3X+Z]-X} (2x+y-z+5)(2x-y+z+5)化简式子! 若实数x、y、z满足(x-z)²-4(x-y)(y-z)=0,则下列式子一定成立的是( )A.x+y+z=0 B.x+y-2z=0 C.y+z-2x=0 D.z+x-2y=0 3.若实数x,y,z满足(x-z)的平方-4(x-y)(y-z)=0,则下列式子一定成立的是( )A.x+y+z=0 B.x+y-2z=0 C.y+z-2x=0 D.z+x-2y=0 若实数x,y,z满足(x-z)^2-4(x-y)(y-z)=0,则下列式子一定成立的是( )A.x+y+z=0 B.x+y-2z=0 C.y+z-2x=0 D.z+x-2y=0 若实数x,y,z满足(x-z)²-4(x-y)(y-z)=0,则下列式子一定成立的是( )A.x+y=z B.x+z=y C.x+z=2y D.x+y=2z 若实数x,y,z满足(x-z)²-4(x-y)(y-z)=0,则下列式子一定成立的是( )A.x+y+z=0 B.x+y-2z=0 c.2x-y-z=0d.x-2y+z =0 若有理数x、y、z满足(x-y)²-4(x-y)(y-z)=0,则下列式子一定成立的是:A:x+y+z=0B:x+y-2z=0C:y+z-2x=0D:z+x-2y=0 如何化简下列式子X:Y:Z=230/585 :16/95 :90/1325 将下列式子因式分解(不需过程,将答案表述清楚就行)x²y-y²z+z²x-x²z+y²x+z²y-2xyz 若实数xyz满足(x—z)方—4(x—y)(y—z)=0,则下列式子一定成立的是( )若实数xyz满足(x—z)方—4(x—y)(y—z)=0,则下列式子一定成立的是( )为什么?A.x+y+z=0 B.x+y—2z=0 C.y+z—2x=0 D.z+x—2y=0 写出下列方程组的解集并化简(1)x+y=5,xy=6 (2)y^2=2x+3,x^2=2y+3 (3)3x+2y+z=13,x+y+2z=7,2x+3y-z=12 (4)y+z=a,z+x=b,x+y=c 已知x:y:z=3:4:7,且2x-y+z=-18,求式子x+2y-z的值. 已知x:Y:Z等于3:4:7且2x-y-z=-18求式子x+2y-z的值 已知X:Y:Z=3:4:7且2X-Y+Z=-18求式子X+2Y-Z的值 若x:y:z=3:4:7,且2x-y+z=18,求代数式x+2y-z的值.要式子,help!Thanks you! 已知 x:y:z=3:4:7,且,2x-y+z= -18,求式子 x+2y-z 已知x:y:z=3:4:7,且2x—y+z=-18,求式子x+2y-z的值.