早教吧作业答案频道 -->数学-->
已知(y+z-x)/(x+y+z)=(z+x-y)/(y+z-x)=(x+y-z)/(z+x-y)=p,那么p^3+p^2+p=已知(y+z-x)/(x+y+z)=(z+x-y)/(y+z-x)=(x+y-z)/(z+x-y)=p,那么p^3+p^2+p=
题目详情
已知(y+z-x)/(x+y+z)=(z+x-y)/(y+z-x)=(x+y-z)/(z+x-y)=p,那么p^3+p^2+p=____
已知(y+z-x)/(x+y+z)=(z+x-y)/(y+z-x)=(x+y-z)/(z+x-y)=p,那么p^3+p^2+p=____
已知(y+z-x)/(x+y+z)=(z+x-y)/(y+z-x)=(x+y-z)/(z+x-y)=p,那么p^3+p^2+p=____
▼优质解答
答案和解析
p^3=(z+x-y)/(y+z-x) * (x+y-z)/(z+x-y) * (y+z-x)/(x+y+z)
= (x+y-z)/(x+y+z)
p^2 = (y+z-x)/(x+y+z) * (z+x-y)/(y+z-x)
= (z+x-y)/(z+x+y)
p = (y+z-x)/(x+y+Z)
p^3+p^2+p= (x+y-z+z+x-y+z-x+y)/(z+x+y)
= 1
= (x+y-z)/(x+y+z)
p^2 = (y+z-x)/(x+y+z) * (z+x-y)/(y+z-x)
= (z+x-y)/(z+x+y)
p = (y+z-x)/(x+y+Z)
p^3+p^2+p= (x+y-z+z+x-y+z-x+y)/(z+x+y)
= 1
看了已知(y+z-x)/(x+y+...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 …
1.(x²-x+1)的6立方=a12*12+a11*x11+……+a1*x+a0,则a12+a11 2020-05-16 …
x+y+z=36x-y=12x+z-y=18x+y+z=26①x-y=1②2x+z-y=18③x+ 2020-06-06 …
设p为质数,整数x,y,z满足0<x<y<z<p,若x³,y³,z³除以p的余设p为质数,整数x, 2020-06-10 …
看到这句话的时候我就彻底崩溃了,希望大家能帮我说通啊,呵呵.矢量场A=A(x,y,z)在oxyz中 2020-06-14 …
1..设x/a+y/b+z/c=1,a/x+b/y+c/z=0,求x*2/a*2+y*2/b*2+z 2020-10-30 …
一道初二数学题,急!设a=x/y+z,b=y/x+z,c=z/x+y,且x+y+z不等于0.求代数式 2020-10-31 …
若x/3=y/4=z/5(z不等于0),求x+y+z/x-y-z的值.提示:可先令x/3=y/4=z 2020-10-31 …
x'=x(y-z);y'=y(z-x);z'=z(x-y);x'=x(y-z);y'=y(z-x); 2020-11-01 …
证明:设F(x,y,z)=0可以确定连续可微隐函数:x=x(y,z),y=y(z,x),z=z(x, 2020-11-03 …