0.25x=0.125(120-x)+15数学应用题

x=1+0.5x+0.25x+0.125x+0.0625x求x的值 0.25x=0.125(120-x)+15 x(x+1)(x-1)=120 x-0.25x+1=10.4x+0.25x-1 证明(x+1)(X+3)(x+5)(x+7)+15=(X+8x)+22(x+8x)+120 (0.5x+1)+(0.25x+0.5)+(0.125x+2.25)=x怎么解, X(X-1)=X 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）） 0.25x=0.125(120-x)+15数学应用题 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-1/0.25-x/12.5=1.2 x等于多少? 0.3(x+1)+0.25(100-x)=2/5x x - (x - 120)*60%-120=1/4x