当x= 时,3x(x-1)-x(3x-6)=12

当x= 时,3x(x-1)-x(3x-6)=12 计算当x=-1/3时,代数式(3x/x-1 - x/x+1)除以x/x²-1 当X=1/X时 求分式 X²-6X+9/X-3 ÷ X+3/X²+6X+9 的值 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 当x=?时,(x+1)(x-1)-(x+3)(x-2)=0 当X=多少时,代数式X+1/X+2 除以 X-3/X-4有意义 已知f(x)是奇函数,当x>0时,f(x)=3x²-x+1,求当x 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 计算(x^2+2x+1/x+2)/(x^2-1/x^2+2x)*(x-1/x),并求当x=-3/2时的值 当x=9/2时,求(x^2+7x+10)/(x^2+6x+5)×(x^3+1)/(x^2+4x+4)÷(x^2-x+1)/(x+2) 当x为何值时,代数式(2x+6)/(x+3)-1/(x-3)-2/x=2 当m为何值时,分式方程(6/x-1)-[x+m/x(x-1)]+(3/x)=0 当m为何值时,方程(3)|(x)+(6)|(x-1)-(x+m)|[x(x-1)]=0 当m为什么数时,分式方程3/x + 6/x-1 = x+m/x(x-1)有根 当x=-1时,x^3+2x^2-5x-6=0,分解因式x^3+2x^2-5x-6 当x=根号3+1时,3(x+1)/x×2x/(x+1)(x²-1)÷6/x的值等于 “f(x)=(x--1)*(x-2)*(x-3).(x-100)当x=3时,求其导函数. 当x=2009时,（3x三次方-4x平方）/x+(1-x)*3x 的值