解方程:3/x+6/x-1=5/x^2-x5/x=7/x-2(x-1/x+1)-(4/x^2-1)=1填空:当x=______时,分时3/x^2-1有意义分式0.01x-0.5y/2x+0.03y化为整系数为_________.分式x^2-4/x+4的值为0,则x的值为________化简(x/x-2-x/x+2)除以4x/2-x的结果是______
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解方程:3/x+6/x-1=5/x^2-x5/x=7/x-2(x-1/x+1)-(4/x^2-1)=1填空:当x=______时,分时3/x^2-1有意义分式0.01x-0.5y/2x+0.03y化为整系数为_________.分式x^2-4/x+4的值为0,则x的值为________化简(x/x-2-x/x+2)除以4x/2-x的结果是______
解方程:3/x+6/x-1=5/x^2-x
5/x=7/x-2
(x-1/x+1)-(4/x^2-1)=1
填空:
当x=______时,分时3/x^2-1有意义
分式0.01x-0.5y/2x+0.03y化为整系数为_________.
分式x^2-4/x+4的值为0,则x的值为________
化简(x/x-2-x/x+2)除以4x/2-x的结果是______.
已知:x+y=2,xy=-5,则1/x+1/y=_____________.
a^3除以a^-2=_____________ (-1/3)^-3=_________
若a^m=4,a^n=8.则a^4m-3n=____________-.
还有个解答题:
2a/2a-b+b/b-2a
1/x+y-1/x-y+2x/x^2-y^2
解方程:3/x+6/x-1=5/x^2-x5/x=7/x-2(x-1/x+1)-(4/x^2-1)=1填空:当x=______时,分时3/x^2-1有意义分式0.01x-0.5y/2x+0.03y化为整系数为_________.分式x^2-4/x+4的值为0,则x的值为________化简(x/x-2-x/x+2)除以4x/2-x的结果是______
解方程:
3/x+6/x-1=5/x^2-x
3(x-1)+6x=5
x=8/9
5/x=7/x-2
7x=5(x-2)
x=-5
(x-1/x+1)-(4/x^2-1)=1
(x-1)^2-4=x^2-1
x^2-2x+1-4=x^2-1
x=-1
此时分母为0,所以原方程无解
填空:
当x_≠±1__时,分时3/x^2-1有意义
分式0.01x-0.5y/2x+0.03y化为整系数为 x-50y/200x+3y.
分式x^2-4/x+4的值为0,则x的值为___±2_____
化简(x/x-2-x/x+2)除以4x/2-x的结果是_-1/(2+x)_.
已知:x+y=2,xy=-5,则1/x+1/y=____-2/5_____.
a^3除以a^-2=_____a^5______ (-1/3)^-3=__-27_____
若a^m=4,a^n=8.则a^4m-3n=___1/16______.
问题补充:
还有个解答题:
2a/2a-b+b/b-2a
=2a-b/2a-b
=1
1/x+y-1/x-y+2x/x^2-y^2
=[x-y-(x+y)+2x]/(x^2-y^2)
=2(x-y)/(x+y)(x-y)
=2/(x+y)
/x+6/x-1=5/x^2-x
首先根据分母,可知x等于0和1时分母无意义;
然后等式两边同时乘上x^2-x,则3(x-1)+6x=5,即9x=8,得x=8/9.
5/x=7/x-2
首先根据分母,可知x等于0和2时分母无意义;
然后等式两边同时乘上x(x-2),则5(x-2)=7x,即2x=-10,得x=-5.
(x-1/x+1)-(4/x^2-1)=1
首先根据分母,可知x等于1和-1时分母无意义;
然后等式两边同时乘上x^2-1,则(x-1)(x-1)-4=x^2-1,即-2x+1=-1,得x=1.