(5-3x)/3-1=(3-2x)/9-x
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
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|
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+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
解方程1/x(x+1)+1/(x+1)(x+2)+...+1/(x+8)(x+9)=2x+3/x(x+9)
(x+2分之x+3)-(x+1分之x+2)=(x+4分之x+5)-(x+3分之x+4) 计算x+3分之2x+9-x-3分