3(1/3x-1/5x)=x-1-1/3x-1/5x 这道题怎么算?
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
7x-3(2/3x+1/5x)-(x+2/5x)+2x,=5x怎么求出
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
3x-1+5x=7x+x-3x这个方程怎么解
(x-3)(x+5)-(x+1)²这道题怎么做?
3(1/3x-1/5x)=x-1-1/3x-1/5x 这道题怎么算?
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
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
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值