百度作业网x^2+4x+2/x^2+4x+3-x^2+7x+5/x^2+7x+6
来源：学生作业帮 编辑：百度作业网作业帮 分类：数学作业 时间：2024/05/10 07:12:20
x^2+4x+2/x^2+4x+3-x^2+7x+5/x^2+7x+6
(x²+4x+2)/(x²+4x+3)-(x²+7x+5)/(x²+7x+6)
=(x²+4x+2)/(x+1)(x+3)-(x²+7x+5)/(x+1)(x+6)
=[(x+6)(x²+4x+2)-(x+3)(x²+7x+5)]/(x+1)(x+3)(x+6)
=[x³+4x²+2x+6x²+24x+12-(x³+7x²+5x+3x²+21x+15)]/(x+1)(x+3)(x+6)
=-3/(x+1)(x+3)(x+6)
再问： 7/x^2+3x+2-4/x^2+4x+3+2/x^2+5x+6 谢啦~~
再答： 原式=(7-4+2)/x²+(3+4+5)x+2+3+6 =5/x²+12x+11
=(x²+4x+2)/(x+1)(x+3)-(x²+7x+5)/(x+1)(x+6)
=[(x+6)(x²+4x+2)-(x+3)(x²+7x+5)]/(x+1)(x+3)(x+6)
=[x³+4x²+2x+6x²+24x+12-(x³+7x²+5x+3x²+21x+15)]/(x+1)(x+3)(x+6)
=-3/(x+1)(x+3)(x+6)
再问： 7/x^2+3x+2-4/x^2+4x+3+2/x^2+5x+6 谢啦~~
再答： 原式=(7-4+2)/x²+(3+4+5)x+2+3+6 =5/x²+12x+11
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2x+3x+4x+5x+x+6x+7x=100
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少
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
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+4x+2/x^2+4x+3-x^2+7x+5/x^2+7x+6
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)
（1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
1x+2x+3x+4x+5x+6x+7x…+99x=100