计算:x^2-3x-1/x-1 - x^2+3x+3/x+3 + 2x+12/x+3
计算 x(x+3)-(x-1)(x-2)
如何计算 (x+1)(x+2)(x+3)(x+4)
计算:(x+1)(x-2)(x-3)(x-6)
计算(X-1)(X-2)(X-3)(X-4)
计算x/(x^2-1) + (x^-x+1)/(x^3-x^2+x-1)+(x^2+x+1)/(x^3+x^2+x+1)
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
x/x-3-5x/x^2-x-6计算
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
计算,X(3x-2)(x+1)-2x(x-2)(x+2)
计算x^2-5x+6/x^2-1/x^2+x/x-3
计算:(x-1)(x^2-4X+3)-x(x^2-5X+2)有过程