1—3x/1+3x+3x+1/3x—1=12/1—9x
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
X³+5x²+3x+9 x四次方—7x²+1
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^21+x^15+x^12+x^9+x^6+x^3+1)/(x^2+x+1)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x+3/x+1-x+5/x+3-x+7/x+5+x+9/x+7=0
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8