比如1+x+x*(x+1)=(x+1)^2 和 81+81*8=81*9=729>700

[x] 比如x=1 那么 [x]=多少 y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)谁会解这道方程题 分式方程.x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6) x/(x-2)+(x+9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)怎样解这道方程 解方程：x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6) x+2/x+3－x+1/x+2=x+8/x+9－x+7/x+8 （1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8 已知f(x)=2+log3^x(1/81≤x≤9),求函数g(x)=[f(x)]^2+f(x^2)的最大值和最小值 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550