化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2
化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2
x²+3x+9/(x²-27)+6x/(9x-x²)-(x-1)/(6+2x)
9x+6x²-3(x-2/3x²),其中x=-2 1/4(-4x²+2x-8)-(1/2x
(1) (x²-9分之x+3 + 6+x-x²分之x)乘4x-6分之3-x (2)解答题:已知2x-
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
不等式|(x+3)/x|>(x+3)/x,不等式(x²-9)/(x-2)>0
化简 (x+y)(x²-xy+y²) ; 3(2x-1)(x+6)-5(x-3)(x+6)
化简(x²+3x+9/x³-27)+(6/9-x² )-(x-1/6+2x)
(x²-6x+9)÷x+3分之x²-9x+18,计算
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)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
先化简,再求值:[1/(x-3)]×[(x的三次方-6x²+9x)/(x²-2x)]-[(1-x)/