数学方程式里X分之X怎么通分

x/(x+1)-2/x²=1-1/(x+1)-2/x²=0通分,化简,得x²+2x+2=0此方程无实数根.

题目不明白.x平方+x分之1还是（x平方+x）分之1?“x平方+x分之1,x平方+2x+1分之-1”中“,”是什么东东

是3道题么?第一个（8x-1)/2x第二个(4x^2-x)/4第三个(4x^2-16x+3)/4再问：合起来的一道题通分:4-2x分之1x的平方-4分之xx的平方-4x+4分之3再答：16x-2/4x

1x³+1x²+-----=－－－－－xx-1x²(2x+1)-12x³+x²-1x²+-----------=--------------

最简公分母是2(x+y)²(x-y)/2x+2y=(x-y)/2(x+y)=(x-y)(x+y)/2(x+y)²xy/(x+y)²=2×xy/2(x+y)²=2

x²-4=(x+2)(x-2)4-2x=-2(x-2)最简公分母是2(x+2)(x-2)x²-4分之1=1/(x²-4)=1/[(x+2)(x-2)]=2/[2(x+2)

显然,（x-1)*(x-2)=x²-3x+2所以通分分母是x²-3x+2就变成x²-3x+2分之4x,x²-3x+2分之x-2,x²-3x+2分之x-

x+4/3=0.5x=0.5-4/3x=3/6-8/6x=-5/6希望对你有所帮助!

(x-y)/(x+y),x/(x²+xy)=1/(x+y),y/(x²-y²)=y/(x+y)(x-y)分母的最小公倍数是(x+y)(x-y)通分得：(x-y)/(x+y

x+y分之x-y=（x-y）²/(x+y)(x-y)x-y分之x+y=(x+y)²/(x+y)(x-y)

公分母是2(x+3)²(x-3)所以6-2x分之x-1=2(x+3)²(x-3)分之[-2(x-1)(x+3)²]x²-9分之6=2(x+3)²(x-

2x+2分之x+2=(x+2)/2(x+1)=2(x²-4)/(4(x+1)(x-2),x²-x-2分之x=x/(x-2)(x+1)=4x/4(x+1)(x-2),4x-8分之3=

（x-y)/(2x+2y)=(x-y)/2(x+y)=(x-y)(x+y)/2(x+y)^2xy/(x+y)^2=2xy/2(x+y)^2x-y/2x+2y=(x^2-y+4xy)/2x=(x^2-y

x/(x²+2x+1),(x-1)/(x²+x),1/(x²-1)式1：x/(x+1)²,式2：(x-1)/[x(x+1)],式3：1/[(x+1)(x-1)]

1/ac;1/2b[通分]2b/2abc;ac/2abc1/x-1;4/x^2-1[通分]x+1/(x+1)(x-1);4/(x+1)(x-1)3/x-2;2/6-3x[通分]9/3(x-2);-2/

兄弟啊,你这题是不是1/（2X+2）+1/（x²+x）?如果是,那原式=1/2（x+1）+1/x（x+1）=（x+2）/2x（x+1）

[(x-2)/(x+2)]+[4/(x²-4)]=1[(x-2)²/(x+2)(x-2)]+[4/(x²-4)]=1[(x²-4x+4)/(x²-4)

公分母是2(x+y）^2(x-y)/(2x+2y)=(x-y)*(x+y)/2(x+y)*(x+y)=(x^2-y^2)/2(x+y)^2xy/(x+y)^2=2xy/2(x+y)^2

x的平方-x-2分之x=（x+1)乘以（x-2)分之x=(x+1)乘以（x-2）方分之x（x-2）x的平方-4x+4分之一=（x-2）方分之一=(x+1)乘以（x-2)方分之（x+1)

∵最简公分母是4（X+1）²（2-X）负2x+2分之x+2=－(2x+2)×2（2-X)(X+1)（分母）(X+2)×2（2-X)(X+1)（分子）=－4（X+1）²（2-X)（分