早教吧作业答案频道 -->数学-->
设4y-2x-z=0,试求4x^2-16y^2+z^2+4xz
题目详情
设4y-2x-z=0,试求4x^2-16y^2+z^2+4xz
▼优质解答
答案和解析
4y-2x-z=0
4y=2x+z
16y^2=4x^2+z^2+4xz
4x^2-16y^2+z^2+4xz=16y^2-16y^2=0
4y=2x+z
16y^2=4x^2+z^2+4xz
4x^2-16y^2+z^2+4xz=16y^2-16y^2=0
看了设4y-2x-z=0,试求4x...的网友还看了以下：
已知x,y,z满足y+z/x=z+x/y=x+y/z=k,求k的值我只知道一个,∵y+z/x=z+ 2020-04-26 …
化简[x^3(y^2-z^2)+y^3(z^2-x^2)+z^3(x^2-y^2)]/[x^3(y 2020-06-03 …
xyz=1,x+y+z=2,x^2+y^2+z^2=3,求x,y,z我解:xy=1/z,x+y=2- 2020-10-31 …
1.x+y+z≠0且x/(y+z)=y/(x+y)=z/x+y,求x/(x+y+z)2.x+y+z= 2020-10-31 …
设正数x,y,z,满足不等式:x^2+y^2-z^2/2xy+y^2+z^2-x^2/2yz+z^2 2020-11-01 …
(a+b+c)/3大于等于3*√abc设a=x^3,b=y^3,c=z^3x,y,z是非负数时x^3 2020-11-01 …
由(x^2+y^2+z^2)*(x+y+z)=x^3+y^3+z^3+(x+y)z^2+(y+z)x 2020-11-01 …
已知道2[√X+√(Y-1)+√(Z-2)]=X+Y+Z,求X,Y,Z2[√X+√(Y-1)+√(Z 2020-11-01 …
下列各式中,与(x-y+z)(x+y-z)相等的是（）A.x^2-y^2-z^2B.-(x+y+z) 2020-11-01 …
已知：x^2/z+y+v^2/x+z+z^2/x+y=0,求x/z+y+y/x+z+z/x+y的值以 2020-12-31 …