若x^2+3x-1=0,则x^3+5x^2+5x+18=______
若x^2+3x-1=0,则x^3+5x^2+5x+18=______
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
若x^3+x^2+x+1=0,求代数式1+x+x^2+x^3+x^4+x^5+...+x^2006+x^2007的值
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
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-1/5x*x-2x-5的值.
已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-[1/5x*x-2x-5]的值.
若x^2+3x-1=0,则x^3+5x^2+5x+18=?
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
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