邢台加油机:10+2(X-1/2)=7(X-2)的值
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23/5
x=1
23/5
(x+1/x+2)-(1/x+7)=(x+2/x+3)-(1/x+6)
已知X/(X^2-X+1)=7,求X^2/(X^4+X^2+1)的值
5x-2/(x+2)(x-2)-(x-1)(x+2)/(x+2)(x-2)=0
解方程:(x-5)(x+7)-(2x+1)(1/2x-1)=1
已知2f(x)+f(1/x)=10^x,求f(x)________________
1-5x-2x/5=x+2/2-10-7x/10
1+x+x^2+x^3=0 ,求x+x^2+x^3+...+x^2000
计算[(x-1)/(x-2)-(x-2)(x-3)-(x-3)/(x-4)+(x-4)(x-5)]/(2x-7)
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
X^2-2X-1=0,X<0问X+1/X=?