已知x2-4x+1=0,求x2/(x-1)-(1+1/(x2-x))的值
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 12:34:21
已知x2-4x+1=0,求x2/(x-1)-(1+1/(x2-x))的值已知x2-4x+1=0,求x2/(x-1)-(1+1/(x2-x))的值已知x2-4x+1=0,求x2/(x-1)-(1+1/(
已知x2-4x+1=0,求x2/(x-1)-(1+1/(x2-x))的值
已知x2-4x+1=0,求x2/(x-1)-(1+1/(x2-x))的值
已知x2-4x+1=0,求x2/(x-1)-(1+1/(x2-x))的值
x2-4x+1=0
x2+1=4x
x2/(x-1)-(1+1/(x2-x))
=x^2/(x-1)-(x^2-x+1)/(x^2-x)
=x^2/(x-1)-(4x-x)/(x^2-x)
=x^3-3x/(x^2-x)
=x(x^2-3)/x(x-1)
=(4x-1-3)/(x-1)
=4(x-1)/(x-1)
=4
x2/(x-1)-(1+1/(x2-x)),将式子同分得:(x3-x2+x-1)/(x2-x);
继续化简得:(x-1)(x2+1)/(x-1)x,得(x2+1)/x,
又由已知得:x2=4x-1,代入得:(4x-1+1)/x=4,
结果::4
已知x2-4x+1=0,求x2/(x2)2-3x2+1
已知x2-4x+1=0,求x2+1/x2的值
已知x2-5x+=0,求x2-4x2-1
已知x2-4x+1=0,求x2+x2分之一
已知x2-4x+1=0,求x2/(x-1)-(1+1/(x2-x))的值
已知x2-2009x+1=0,求x2-2008x+2009/x2+1 (x2=x的平方)
已知x2+5x-4=0,求x3+6x2+x+2的值已知x2+x-1=0,求x3+2x2+3的值
已知x2-11x-1=0,求x2+1/x2=?x2就是x的平方.
已知x2+3x+1=0,求x2+1/X2的值x2指x的平方
已知x2+4x+1=0,求x2+1/x
已知x2-x-1=0求4x2-4x+9的值
已知x2-3x+1=0,求x4-6x3+4x2+15x+2
x2-3x-1=0,求①x2 1/x2;②x2-1/x2
已知x2+3x+1=0,求x2/x4+3x2+1的值
已知x2-3x+1=0,求代数式x2/x4+3x2+1
已知x2-3x+1=0,求x2/x4+x2+1的值
已知X2-3X+1=0,求X2/X4+3X2+1的值是多少?
已知X2-3X-1=0 求X2+1/X2的值