化简X/X²-3X×(X²-9)
化简 (3x/x-1 -x/x+1)÷x/x²-1
不等式|(x+3)/x|>(x+3)/x,不等式(x²-9)/(x-2)>0
化简:-3x(x²+1)-[x³-x(4x²+1)].
化简:x+(1/x-1)+(x²-3x+4/1-x²)
(x²-6x+9)÷x+3分之x²-9x+18,计算
-(x²-2x)+(-3x+2x²)化简!
X²-6x+9 x²-9 x+3
化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2
f(x)=x²+3x|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)
x²+3x+9/(x²-27)+6x/(9x-x²)-(x-1)/(6+2x)
(2x-6)/(x²-4x+4)÷(3-x)/(x²+6x+9)×(2-x)/(x+3)