(x+3)(x²+9)(x-3)
不等式|(x+3)/x|>(x+3)/x,不等式(x²-9)/(x-2)>0
(x²-6x+9)÷x+3分之x²-9x+18,计算
X²-6x+9 x²-9 x+3
f(x)=x²+3x|x-2|
因式分解:(x+3)(x-3)(x²+9)
(x+3)(x²+9)(x-3)
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)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(x²-6x+9分之x²-9)-x²-3x分之4x