已知x²-y+1分之x=5,求x四次方+x²+1分之x²的值已知x²-x+1分之x=5,求x四次方+x²+1分之x²的值
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已知x²-y+1分之x=5,求x四次方+x²+1分之x²的值已知x²-x+1分之x=5,求x四次方+x²+1分之x²的值
已知x²-y+1分之x=5,求x四次方+x²+1分之x²的值
已知x²-x+1分之x=5,求x四次方+x²+1分之x²的值
已知x²-y+1分之x=5,求x四次方+x²+1分之x²的值已知x²-x+1分之x=5,求x四次方+x²+1分之x²的值
x/(x²-x+1)=5——》(x²-x+1)/x=1/5=x-1+1/x——》x+1/x=6/5——》x²+1/x²+2=36/25
——》x²+1/x²+1=11/25——》x²/(x^4+x²+1)=1/(x²+1/x²+1)=25/11