x-3分之x的二次方-6-搜答案-神马作文网

(x+2)/(x-2)-1=3/(x²-4)(x+2-x+2)/(x-2)=3/(x-2)(x+2)(x≠2)4=3/(x+2)4x+8=34x=-5x=-5/4你的题目不够清晰

x-x分之1=3x^2-2+1/x^2=9x^2+1/x^2=11x^4+1=11x^2x^4=11x^2-1x-x分之1=3x^2-1=3xx^2=3x+1x的四次方-2x的三次方-2x的二次方-7

X方-X+1分之X=7(x²-x+1)/x=1/7x-1+1/x=1/7x+1/x=8/7X四次方+X二次方+1分之X二次方分子分母同时除以x²=1/(x²+1+1/x&

看你的题目都看了很少时间(x-4)/(x^2-1)÷(x^2-3x-4)/(x^2+2x+1)+1/(x-1)=(x-4)/(x^2-1)[(x^2+2x+1)/(x^2-3x-4)]+1/(x-1)

x+1/x=3x²+1/x²=(x+1/x)²-2=9-2=7x²/(x^4+x²+1)=1/(x²+1/x²+1)=1/(7+1

x的平方-3x+1=0两边除以x得x-3+1/x=0∴x+1/x=3两边平方得x²+2+1/x²=9x²+1+1/x²=8x²/(x的4次方+x

x²-7/x+x²-3/x=x²-6?是这样么再问：有详细的吗再答：我是为你的题目就是这样么？？你方程两边同时乘以x（x+1）（x-1）得到；7x-7+3x+3=6x;4

x^2-3x+1=0x^2+1=3x两边除xx+1/x=3平方x^2+2+1/x^2=9x^2+1/x^2=9-2=7

我操,你这样鬼能看懂啊?分子是啥分母是啥,那些加、除都在什么位置上啊?

=1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)=1/x-1/(x+1)+1/(x+1)-1/(x+2)+1/(x+2)-1/(x+3)+1/(x+3)

x/y=-2则x=-2y则原式=(x²-2xy-3y²)/(x²-6xy-7y²)=(x+y)(x-3y)/(x+y)(x-7y)=(x-3y)/(x-7y)=

/>X²-6X+8=0X²-6X+9=1(x-3)²=1于是[2(X-3)²]³÷(X-3)²=8[(X-3)³]²÷(

(x²-1)²+6(x²-1)+9=(x²-1+3)²=(x²+2)²只需要把x²-1看做一个整体就行泪笑为您解答,如若

A-B/2=2X^3+3X^2-X-(2X^3+4X^2-X+3)=-X^2-3=-1/4-3=-13/4

x四次方-6x三次方+9x二次方分之x二次方-3x=x(x-3)/x²（x²-6x+9）=(x-3)/x(x-3)²=1/x(x-3)=1/(x²-3x)如追加

原式=3x²+3x+1=3×(-5)²+3×(-5)+1=75-15+1=61

x二次方-x-4分之3=0

"x2-x+1/4-1/4-3/4=0（x-1/2）2-1=0x-1/2=1或x-1/2=-1x=3/2或x=-1/2"

代数式(3x的二次方-4)-(2x二次方-5x+6)+(x二次方-5x)=[3×(-2)²-4]-[2×(-2)²-5(-2)+6]+[(-2)²-5×(-2)]=3×4

没有写清楚到底需要做什么再问：计算。再答：答案为0，过程在图片里

第一题：(x-2y)*x^3-(y-2x)*y^3=x^4-2x^3y-y^4+2xy^3=(x^4-y^4)-2xy(x^2-y^2)=(x^2+y^2-2xy)(x^2-y^2)=(x-y)^2*