2/3X除以1/4=12 X-3/4X=4 8/9X=1/6x16/51
先化简,再求值:x^3+2x^2+x/x^2+2x-8除以(x/x-2 × x+1/x+4),其中x=负5/4
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
(5x-2除以x-1)+1=4x+5除以3x-3
x+3除以2=x-(x-1)除以6
化简求值 已知[x-(x/x+1)]*(x+1/x^2+3x+2)除以(x^2-2x/x^2-4),其中x=-1/2
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
1除以5-x+2除以4-x+3除以3-x=-3
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),
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
化简求值:(x^2-4x)/(x+1)除以(4-x)/x,其中x=-3
1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980