4〔x-1〕^2-9〔x+1〕^2=0

化简9X-｛6-〔-3x+（-1-4x）〕+2x｝ 求f(x)=(x'2-2x)/(x-2)的奇偶性.求f(x)=(1-x)根号〔(1+x)/(1-x)〕的奇偶性. x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002 解方程(3x^2+9x+7)/(x+1)-(2x^2+4x-3)/(x-1)-(x^3+x+1)/(x^2-1)=0 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 方程（x+1)(x+2)(x+3)(x+4)(x+5)(x+6)(x+7)(x^2+8x+9)+64=0 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 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 已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值 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), (4x+2)/x+(4x-22)/(x-5)=(x-6)/(x-4)+(7x+9)/(x+1) （1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8