12-3(9-X)=5(X-4)-7(7-x)的解答,
7x-11=9x+4-3x怎么解答 3-5x-12=7-4x怎么解答 4x+9-8x=6-5x怎么解答
7x-14=5x+9 3x-12=5x-20 56x=42(x+2)用方程解答(五年级的)
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) 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?
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
求积分∫(x^7-4x^5-x^3+5x+1)/(x^5-2x^4-x+2)dx的具体解答过程
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
4x-3x(20-x)=5x-7x(20-x)的解法
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
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),
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)