x/xx+x+1=1/4 求xx/xxxx+xx+1
已知xx+x-1=0,求:xx+1/xx,xxxx+1/xxxx
已知:3x=xx-x+1求(xxxx+xx+1)分之xx
已知x/(xx+x+1)=a,求xx/(xxxx+xx+1)的值
已知x+1/x=3,求(xx)/(xxxx+xx+1)的值
已知xx-5x+1=0,求xxxx+1/xx的值
xx-3x+1=0求xxxx+1÷(xxxx)=?
已知xx-2x-1=0,求xxxx-xxx-5xx-7x+5的值拜托各位大神
已知f(x-1/x)=xx/(1+xxxx),求f(x)
x+xx+xxx=xxxx
5x-1=4x 求XX=多少
xxx+xx+x+1求x^ 2008
已知XX+X+1=0,求XXX+2XX+2X+3的值