-4x-(-1/3x)+(-1/4x)化简
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
化简{x²-2x分之x+2-x²-4x+4x分之x-1}除以X分之(x-1)(X-4)乘以(2-x)
化简:-3x(x²+1)-[x³-x(4x²+1)].
化简:x+(1/x-1)+(x²-3x+4/1-x²)
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
3/x-1=4/x 6/x+1=x+5/x(x+1)
化简(-2x^2)+3x+2)-3(7x^2-5x-1)-(4x^2-x+6)
1/(x+1)(x+2) + 1/(x+2)(x+3) + 1/(x+3)(x+4) + ...+ 1/(x+2005)
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算