1/50*X+(42-X)=1
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1/50*X+(42-X)=1
1/50*X+(42-X)=1
1/50*X+(42-X)=1
(1-1/50)x = 42 -1
49/50x = 41
x = 41*50/49 = 2050/49
1/50*X+(42-X)=1
(x+7)(x+5)-(x+1)(x+5)=42
X(X-1)=X
50x(x-1)+60x(x-4)=5100
(x+1)+(x+2)+(X+3).+(x+50)=1325
解方程((13x-x^2)/(x+1))(x+(13-x)/(x+1))=42
(13x-x^2)/(x+1)[x+(13-x)/(x+1)]=42
x>=1,x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x*x*x*x+2008x*x+2007x+2008(提示:x*x*x-1=(x-1)*(x*x+x+1))
x/x平方-x+2=2x/x+1
(X+1)X(X+2)X(X+3)=504
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
x/x-2 - 8/x²-4 =1/x+2x/x-2 - 1=1/x²-42/x²-1 - 1/x-1=1
解分式方程:1/X-2+1/X-6=1/X-7+1/X-11/X-2+1/X-6=1/X-7+1/X-11/(x-2)-1/(x-1)=1/(x-7)-1/(x-6)(x-1-x+2)/(x-2)(x-1)=(x-6-x+7)/(x-7)(x-6)1/(x-2)(x-1)=1/(x-7)(x-6)(x-2)(x-1)=(x-7)(x-6)x^2-3x+2=x^2-13x+4213x-3x=42-210x=40x=4 为什么要移向才能解
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)