化简(x^2-4x+4/2x)÷(x^2-2x/x^2)+1
x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)
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
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
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(x^2-4/x^2-4x+4)÷(x+2/x+1)-x/x-2
化简:1x(x+1)+1(x+1)(x+2)+1(x+2)(x+3)+1(x+3)(x+4)
计算:2x/(x-2)(x+1)÷(1-x/x+1)-x²+2x/x²-4?
[(x+2)/(x²+2x)-(x-1)/(x²-4x+4)]÷(x-4)/x
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
3x/(x-2)-x/(x+2)÷2x/(x-4)化简