百武装战记壁纸:(3000-X)/(6000+X)=25% 如何算出来的
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4*(3000-x)=6000+x
12000-4x=6000+x
5x=6000
x=1200
(3000-X)/(6000+X)=25% 如何算出来的
(x*x*x-x*x+x)/(x*x*x+1)+(x*x+x+1)/[(1-x*x)/x)]
(x*x*x-x*x+x)/(x*x*x+1)+(x*x+x+1)/[(1-x*x)/x)]
已知x*x-3x+1=0,求x*x+1/x*x
解一元二次方程X*X+1/X*X+X+1/X=0
当1<x<2时化简| x-1|/1-x-x/|x|-|x-2|/2-x
5x-2/(x+2)(x-2)-(x-1)(x+2)/(x+2)(x-2)=0
问几道题目:1.(2*x*x*x+x*x-11x-5)/(x+2)的余式是 .
谁会解这道题:(X-5)/(X-7)+(X-2)/(X-4)=(X-3)/(X-5)+(X-4)/(X-6)求X的值
计算[(x-1)/(x-2)-(x-2)(x-3)-(x-3)/(x-4)+(x-4)(x-5)]/(2x-7)