0.6:x=1/4:1/42 x=?

x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002 （X+4)(x-2)(x-4),其中x=-1 (x^2+x-1)(x^2+x+2)=4 (1)3x(x+0.2)=4x(x-1.1) 1/(x-4)(x-3)+1/(x-3)(x+2)+1/(x-2)(x-1)+1/(x-1)x+1/x(x+1)=1/x y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), 已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值