6x的平方- 11x 4=0

x=x分之1,x^2=1,x=±1x4次方+x平方-6除以x平方+3=1+1-6+3=-1

x²-13x+1=0两边除以xx+1/x=13两边平方可得x²+1/x²+2=169x²+1/x²=167两边平方可得x^4+1/x^4=167&su

∵x²-4x+1=0两边同时除以x得∴x-4+1/x=0∴x+1/x=4两边同时平方得∴x²+2+1/x²=16∴x²+1/x²=14两边同时平方的∴

x^2-3x+1=0x^2+1=3x两边同除以xx+1/x=3x^2+1/x^2=(x+1/x)^2-2=9-2=7x^4+1/x^4=(x^2+1/x^2)^2-2=49-2=47

x^2-3x+1=0x^2+1=3x同时除以xx+1/x=3所以x^2+1/x^2=(x+1/x)^2-2=3^2-2=7x^2/(x^4+x^2+1)=1/(x^2+1+1/x^2)=1/8

x²+5x+1=0x+5+1/x=0∴x+1/x=-5x²+1/x²=(x+1/x)²-2=25-2=23(x²+1/x²)²=x

x²－3x＋1＝0两边同除以x得x－3＋1／x=0即x＋1／x=3x平方/x4次方+x平方+1这里分母是x4次方,则x平方/x4次方+x平方+1=1／x²＋x²＋1=﹙x

分析：降次x^2=5x-1所以（x^4+1）/x^2=[(5x-1)^2+1]/(5x-1)=(25x^2-10x+2)/(5x-1)=[25(5x-1)-10x+2]/(5x-1)=(115x-23

x²-3x+1=0同除以xx+1/x-3=0x+1/x=3两边平方x²+1/x²+2=9x²+1/x²=7x²/(x^4+3x²+

x2(2表示平方）-5x+1=0两边除以xx-5+1/x=0x+1/x=5两边平方x²+2+1/x²=25x²+1/x²=23两边平方x^4+2+1/x^4=5

X的平方-5x+1=011x-5-——=0x-——=5xx（x^4+1)分之x的平方先算它的倒数：x^4+111————=x^2+———=(x-——)^2-2把上面化简了的代入：（5）^2-2=25-

x^2-3x+1=0x^2+1=3xx+1/x=3(x+1/x)^2=9x^2+1/x^2+2=9x^2+1/x^2=7(x^2+1/x^2)^2=49x^4+1/x^4+2=49x^4+1/x^4=

X^2-3X+1=0x+1/x=3x^2+1/x^2+2=9x^2+1/x^2=7x^4+1/x^4+2=49x^4+1/x^4=47

x²-3x+1=0可以得出x≠0两边同除以x得x-3+1/x=0即x+1/x=3x²+1/x²=（x+1/x）²-2=7x⁴+1/x⁴=

x⁴+2x³+4x²+3x+2=x⁴+x³+x²+x³+x²+x+2x²+2x+2=x²(x&#

由X²-X-1=0,两边同时除以X,得X-1-X/1=0,则X-X/1=1两边平方得X²+1/X²=1上面的式子再两边平方,就得到x的4次方+x4次方分之一的值是1啦~

6X^2-7xy-3y^2-x+7y-2=6x^2-(7y+1)x-(3y^2-7y+2)=6x^2-(7y+1)x-(y-2)(3y-1)=[2x-(3y-1)][3x+(y-2)]=(2x-3y+

x平方-3x+1=0二边同除以xx-3+1/x=0x+1/x=3x^2+1/x^2=(x+1/x)^2-2=3^2-2=7x^4+1/x^4=(x^2+1/x^2)^2-2=7^2-2=47

x^2-4x+1=0两边除以xx+/x=4则x^2+1/x^2=14x^4+1/x^4+2=14^2则x^4+1/x^4=14^2-2

x^2-2x-1=0.即x^2-2x=1所以原式=(x^4-2x^3)-(3x^3-6x^2)+(5x^2-10x)+x-5=(x^2)*(x^2-2x)-3x*(x^2-2x)+5*(x^2-2x)