(2x^2-2x+2/1)/(x-2/1)怎么算啊?
(X-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2)怎么算?
(x+1)(x-2)-(x-1)的平方怎么算?
y+(1+x)(2+x)(3+x)导数怎么算,
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)化简怎么算?
{2X+1}+{X}
x^2-|x|+1
|x-1|+|x-2|
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
7x-3(2/3x+1/5x)-(x+2/5x)+2x,=5x怎么求出
化简:x(x^2+x)/x^2(x^2-1)