若实数XYZ 满足(X-Z)-4(X-Y)(Y-Z)=0则下列式子一定成立的是1楼 A .X +Y +Z =0 B.X+Y -2 Z= 0 C .Y+Z - 2X = 0 D .Z +x - 2Y = 0

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若实数XYZ满足(X-Z)-4(X-Y)(Y-Z)=0则下列式子一定成立的是1楼A.X+Y+Z=0B.X+Y-2Z=0C.Y+Z-2X=0D.Z+x-2Y=0若实数XYZ满足(X-Z)-4(X-Y)(

若实数XYZ 满足(X-Z)-4(X-Y)(Y-Z)=0则下列式子一定成立的是1楼 A .X +Y +Z =0 B.X+Y -2 Z= 0 C .Y+Z - 2X = 0 D .Z +x - 2Y = 0
若实数XYZ 满足(X-Z)-4(X-Y)(Y-Z)=0则下列式子一定成立的是
1楼
A .X +Y +Z =0 B.X+Y -2 Z= 0 C .Y+Z - 2X = 0 D .Z +x - 2Y = 0

若实数XYZ 满足(X-Z)-4(X-Y)(Y-Z)=0则下列式子一定成立的是1楼 A .X +Y +Z =0 B.X+Y -2 Z= 0 C .Y+Z - 2X = 0 D .Z +x - 2Y = 0
设X-Y=a,Y-Z=b
由题意得 (a+b)^2-4ab=(a-b)^2=0
∴ a=b
∴ X-Y=Y-Z
∴ Z+X-2Y=0
∴选D

若x的平方减3x+1=0，则x的四次方+x的平方+1分之x平方的值为多少？
答：（超详细）
x²-3x+1=0
x²-3x=-1
x-3=-1/x
x+1/x=3
x+1=3x
1=3x-x
1=2x
0.5=x
x=0.5或1/2

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