x-3分之1等于-3-x分之一吗
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1/(x-1)-1/(x-2)=1/(x-3)-1/(x-4)1/(x-1)+1/(x-4)=1/(x-2)+1/(x-3)通分(2x-5)/(x²-5x+4)=(2x-5)/(x²
x+1/6=3/8x=3/8-1/6x=5/24x=24分之5
1√x+1/√x=3t=√x>0t+1/t=3t^2-3t+1=0(t-3/2)^2=5/4t=-√5/2+3/2或t=-√5/2+3/2x=t^2=5/4+9/4-3√5/2=14/4-3√5/2或
3分之2x-1=2分之一x+3---------3分之2x-2分之一x=4---------(分之)(32x-x)=4---------x=4/分之31
x+1/x==3两边乘xx²+1=3x两边平方x^4+2x²+1=9x²x^4+x²+1=8x²所以x²/(x^4+x²+1)=1
①∵(x^4+x²+1)/x²=x²+1+1/x²∴原式=1/(x²+1+1/x²)②∵1/x-1/y=(y-x)/xy=3∴x-xy-y=
得xy分之y-x=3得y-x=3xy带入得-9xy-5xy分之-3xy-2xy得14分之5..求采纳.谢谢
=[(x+3)-(x+2)]/(x+2)(x+3)+[(x+4)-(x+3)]/(x+3)(x+4)+[(x+5)-(x+4)]/(x+5)(x+4)=1/(x+2)-1/(x+3)+1/(x+3)-
给已知的式子两边同时平方,得到x的平方+2+x平方分之一=9,然后移项,得到最后结果等于7
x/(x^2+1) 分子分母同时除以x得=1/(x+1/x)=1/3
(1)、4/5x+2/5=3/54/5x=3/5-2/54/5x=1/5x=1/5÷4/5x=1/4(2)、1/5+8x=1/28x=1/2-1/58x=3/10x=3/10÷8x=3/80(3)、x
1=x/2+x/31=5x/6x=6/5
这题实数部分无解啊,是两个虚数,楼主是不是打错了啊
x-4分之一x=8分之33x/4=3/8两边乘以86x=3x=3/6=0.5x-0.8x=220.2x=22x=22/0.2x=110
1/x(x+1)=1/x-1/(x+1)1/(x+1)(x+2)=1/(x+1)-1/(x+2)后面以此类推原式=1/x-1/(x+1)+1/(x+1)-1/(x+2)+……+1/(x+1998)-1
x+1/x=3两边平方x^2+2*x*1/x+1/x^2=3^2x^2+2+1/x^2=9x^2+1/x^2=7x^2/(x^4+x^2+1)上下除以x^2=1/(x^2+1+1/x^2)=1/(7+
等式左侧通分(x-6-x)/x(x-6)=1/3x-6/x(x-6)=1/3xx方-6x=-18xx方+12x=0x(x+12)=0x=0或-12依题意x不等于0所以x=-12