3x / 0.5 - 2-x/0.4 = 1
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
1、0.3X-0.4X=0.5 2、5X-2.5X+3.5X=-18 3、X-2/5X=-3+6
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(X-4)(x-2)-2(X-1)(X+3)其中X=-0.5
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
x-2/0.2-x+1/0.5=3 x=?
f(x-1)=x^2-2x+3(x
(x+3)×(x+2)×(x+1)×x=3024
f(x)=(x-1)(x-2).(x-3)求导
(x+2)(x-3)(x-6)(x-1)=0
函数,y=3x/(x^2+x+1) ,x
函数y=3x/(x^2+x+1) (x