若x*x+x+1+0,求x^7+2x^6+x^5+x^4+x^3+x*x+1的值
x/x-3-5x/x^2-x-6计算
若x+x^2+x^3+x^4=0.求x^5+x^6+…+x^2004的值
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
若3x^2-x=1,求6x^3+7x-5x+2009
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100
(5x+1)X(6x+2)
(2x^-5x+2/6x^+13x+6)*(6x^-5x-6/6x^-17x+10)*(12x^+8x-15/2x^-x
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少