下列三个分式2x的平方分之1,4(m-n)分之5x-1
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(1)x≠0(2)x≠-5/4(3)x是任意实数
1、x不等有3/22、x不等于1或者-13、x不等于-1或者2
(x的平方-x)分之2+(x的平方+x)分之3=(x的平方-1)分之42/(x^2-x)+3/(x^2+x)=4/(x^2-1)2/x(x-1)+3/x(x+1)=4/(x+1)(x-1)两边同乘以x
(x-1)/(x^2-x),2/(x^2-1),x/(x^2+2x+1)最简公分母:x(x-1)(x+1)^2
∵(1)x+1分之2x无意义∴x+1=0∴X=-1∴当X=-1时,x+1分之2x无意义(2)∵x的平方-4分之1无意义∴x的平方-4=0∴X=±2∴当X=±2时,x的平方-4分之1无意义(3)∵x的平
即【x-1】分之【x+2】【x-1]】=0x+2=0x=-2
x≠-2且x≠1时,分式有意义再问:过程?使分式有意义的条件:分母≠0,即是(x+2)(x-1)≠0,,x的平方+x≠0再答:由分母≠0,得:(x+2)(x-1)≠0,解得:x≠-2且x≠1,故:x≠
(4-x²)/(x²y-2xy)=-(x²-4)/(x²y-2xy)=-(x+2)(x-2)/xy(x-2)=-(x+2)/xy愿对你有所帮助!
x平方-4分之1=1/[(x-2)(x+2)]x-2分之x平方-4x=(x平方-4x)(x+2)/[(x-2)(x+2)]x-2分之x平方+4x+4=(x+2)三次方/[(x-2)(x+2)]最简公分
2/(x-1)=4/x^21/(x-1)-2/x^2=0[x^2-2(x-1)]/[x^2(x-1)]=0(x^2-2x+2)/[x^2(x-1)]=0因为x^2-2x+2=x^2-2x+1+1=(x
两边乘以(x+2)(x-2)得-x²=(x-2)-(x+2)(x-2)-x²=x-2-x²+4x=-2检验:x=-2是增根∴方程无解再问:���������ʽa-3��֮
分式:-3b/a^2,-a^2b/3,1/(x-1),(a^2+2ab+b^2)/3,a/π整式:2x^2/x
(x-1)(x-3)≠0x≠1,x≠3时有意义
1.(x³-xy²)/(x-y)²=x(x²-y²)/(x-y)²=x(x-y)(x+y)/(x-y)(x+y)=(x²+xy)/
原式=1/(x+1)*[(x-3)/(x+3)^2+2/(x+3)]-x/(x+3)(x-3)=1/(x+1)[3(x+1)/(x+3)^2]-x/(x+3)(x-3)=3/(x+3)^2-x/(x+
x²+3≥3>0即不会等于0所以选D
“数理答疑团”为您解答,希望对你有所帮助.x²+x-2=0x=-2和x=1是分式方程x的平方+x-2分之3=x-1分之x-x+2分之x的增根手机提问的朋友在客户端右上角评价点【满意】即可.
(x^2-1)/(x^2-2x+1)=[(x+1)(x-1)]/(x-1)^2=(x+1)/(x-1)
3x(x-2)(x+3)²