x/2-x/2.5=50
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x+3x+x-2+x+x+50%x=188 求x
x/2-x/2.5=50
2*x*x+2.5x=13 x=?
(x+1)+(x+2)+(X+3).+(x+50)=1325
x+ x+(x*50%)=1.5X?
f(x)=x^2+x (x
3道简单的分式方程,1.3/(1-x^) = 2/(1+2x+x) - 5/1-2x+x^2.5x/(x^+x-6) + (2x-5)/(x^-x-12) = (7x-10)/(x^-6x+8)3.(x+1)/(x+2) + (x+6)/(x+7) = (x+2)/(x+3) + (x+5)/(x+6)
2x:16-2x=2.5x:20-2.5x x=爱克斯(未知数)
x^2=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,
10x+2x*[(50-x)/2]+5x[(50-x)/2]=240
30x+20x-x^2=50x-x^2 怎么算
x/x平方-x+2=2x/x+1
f(x)=x|x|+2x (x
(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
2X+2.5(x+0.04)=11.1X=多少