若x,y,z成等差数列,则(Z-X)^2-4(X-Y)(Y-Z)等于
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/27 07:00:51
若x,y,z成等差数列,则(Z-X)^2-4(X-Y)(Y-Z)等于若x,y,z成等差数列,则(Z-X)^2-4(X-Y)(Y-Z)等于若x,y,z成等差数列,则(Z-X)^2-4(X-Y)(Y-Z)
若x,y,z成等差数列,则(Z-X)^2-4(X-Y)(Y-Z)等于
若x,y,z成等差数列,则(Z-X)^2-4(X-Y)(Y-Z)等于
若x,y,z成等差数列,则(Z-X)^2-4(X-Y)(Y-Z)等于
(z-x)^2-4(x-y)(y-z)
(z-x)^2=(x-z)^2=[(x-y)+(y-z)]^2
[(x-y)+(y+z)]^2-4(x-y)(y-z)
(x-y)^2+(y-z)^2-2(x-y)(y-z)
[(x-y)-(y-z)]^2=0
(x+z-2y)^2=0
x,y,z成等差数列,所以x+z-2y=0
(Z-X)^2-4(X-Y)(Y-Z)等于0
希望采纳····
0
就算不去计算,,猜都猜的到。。
z-x)^2-4(x-y)(y-z)
(z-x)^2=(x-z)^2=[(x-y)+(y-z)]^2
[(x-y)+(y+z)]^2-4(x-y)(y-z)
(x-y)^2+(y-z)^2-2(x-y)(y-z)
[(x-y)-(y-z)]^2=0
(x+z-2y)^2=0
若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-z)=
若x,y,z成等差数列,则(Z-X)^2-4(X-Y)(Y-Z)等于
若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-x)=
若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-z)=_________
若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-z)=_____
求证成等差数列.求证:x,y,z成等差数列.若(z-x)^2-4(x-y)(y-z).
若1/X 1/y 1/z 成等差数列,求证:(Y-Z-X)/X (Z+X-Y)/Y (X+Y-Z)/z也成等差数列越快越好
若5,x,y,z,21成等差数列,则x,y,z为.
若1,x,y,z,7成等差数列,则z—x=___
一直X.Y.Z,成等差数列,求证x^2(y+z),y^2(z+x),z^2(x+y)成等差数列
设x,y.z为实数,2x.3y.4z是等比数列,1/x,1/y.1/z是等差数列,则(x/z)+(z/x)是多少?
非零实数x、y、z成等差数列,x+1,y,z与x,y,z+2分别成等比数列,则y等于?
设x,y,z是实数,若9x,12y,15z成等比数列,且1/x,1/y,1/z成等差数列,则x/z+z/x=
若三个正数a,b,c成等比数列,三数x,y ,.z 成等差数列,则(y-z)lga+(z-x)lgb+(x-y)lgc=
设X,Y,Z为实数,2X,3Y,4Z成等比数列,且1/X,1/Y,1/Z成等差数列,则X/Z+Z/X的值是
已知x,y,z∈R,若-1,x,y,z,-3成等差数列,则x+y+z的值为?
已知三个实数x,y,z满足条件(z-x)^2-4(x-y)(y-z)=0,求证:x,y,z成等差数列
若x+y+z=3y=2z,则x/x+y+z=?