(x-2)^2-18=0 x=?

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 f(x)={x^2-2x,x>=0 x^2+2x,x 如果X*X--1=0,那么X*X*X+2*X*X+2008=几? 已知x*x+x-1=0 求x*x*x-2x+11=? 已知x*x+x-1=0求x*x*x-2x+2010的值 90-x=2x(18+x) x/(x^2+6x+18)=? x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002 x(x-2)+x-2=0 x(x-2)+x-2=0 1/(x^2+7x)-1/(x^2+7x)+1/(x^2+7X+18)-1/(x^2+7X+12)=0求X f(x)=x^2+x (x x+(x+3)+2x+(2x-18)=255 x^2=(x+30)X(x-18)怎么解 5/x^2+x - 1/x^2-x=0 x/x-1-2x-2/x-1=0 (x^-2x)^-5(x^-2x)-6=0 2/(x-2)-4*x/(x*x-4)=0