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
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
方程(x+1)(x+2)(x+3)(x+4)(x+5)(x+6)(x+7)(x^2+8x+9)+64=0
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
6x-7x+1=0
已知x^2+8x-6=0,求x(x+1)(x+7)(x+8)的值
(x+7)(x+6)-(x-2)(x+1)=?
(x+2)(x-3)(x-6)(x-1)=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
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),
x+3/x+1-x+5/x+3-x+7/x+5+x+9/x+7=0