(x-2)/30+(x-3)/45+x/90=1
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x-10=4(x-28) 3(x-28)=x+56+28 2(1.5x-30-20)=x 2(2x-20-45)=x-1
计算:(x+1)x=7 (x-1)(x+2)=30 (3-x)(3-x)+x=9
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
x-1)/15+(x-2)/30+(x-3)/18+x/45=1的计算过程
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