9x^4 - 3x^3 + 7x^2 - 3x + 2 等于?
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
(-x)1(-x)2(-x)3(-x^4)等于多少
(x+1)(x+2)(x+3)(x+4)等于多少
2x^6×x³-3x^9+5x²×x^7等于多少
3x小于4x,5x-4大于等于2+7x 4x-5大于2x+1,5x-9大于x-1 9x+4小于等于6x+1,2x-8小于
9x^4 - 3x^3 + 7x^2 - 3x + 2 等于?
解不等式(2-x)(4-3x)大于等于9x-3x^2-7
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),