(x-1)+x(x+1)=99 = x =

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(x-1)+x(x+1)=99=x=(x-1)+x(x+1)=99=x=(x-1)+x(x+1)=99=x=(x-1)+x(x+1)=99x²+2x=100x²+2x+1=101(

(x-1)+x(x+1)=99 = x =
(x-1)+x(x+1)=99 = x =

(x-1)+x(x+1)=99 = x =
(x-1)+x(x+1)=99
x²+2x=100
x²+2x+1=101
(x+1)² =101
x+1=±√101
x=-1±√101

X(X-1)=X (x-1)+x(x+1)=99 = 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）） 1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3).+1/(X+99)(X+100)= x/x平方-x+2=2x/x+1 (X+1)X(X+2)X(X+3)=504 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 1X+2X+3X…+98X+99X+100X=50500X X等于多少? 1x+2x+3x+4x+5x+6x+7x…+99x=100 f(x)=x(x-1)(x-2)…(x-99)(x-100),求f'(100) 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 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）已知x^4+x^3+x^3+x^2+x^1+1=0,求x^100+x^99+x^98+x^97+x^96的值化简1+x+x(1+x)+x(1+x)²;+L+x(1+x)2012=