(x-4)(x+1)(x+2)(x+7)+56=0
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
3x(7-2x)+5x(2x-1)=4x(x-3)+56
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
3x(7-2x)+5x(2x-1)=4x(x-3)+56 求X的值
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
解方程(3x^2+9x+7)/(x+1)-(2x^2+4x-3)/(x-1)-(x^3+x+1)/(x^2-1)=0
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
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)