1/【2x+(1-x^2)/x]
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
计算 x(x+3)-(x-1)(x-2)
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)
{2X+1}+{X}
x^2-|x|+1
|x-1|+|x-2|
(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
[(x+2)/(x²+2x)-(x-1)/(x²-4x+4)]÷(x-4)/x