(1-x) (x方-2 x)除以(x-2 2 x 2)-搜答案-灵鹊做题网

limx→∞X方-1除以3X方-X-1=limx→∞1-1/x平方除以3-1/X-1/x平方=（1-0）÷（3-0-0）=1/3

((x+2)/(x^2-2x)-(x-1)/(x^2-4x+4))/((x^2-16)/(x^2+4x))=((x+2)(x-2)-(x-1)x)/((x-2)^2*x)/((x-4)/x)=((x-

x^2-3x+1/x=2x^2-3x+1=2xx^2-5x+1=0两边乘xx-5+1/x=0x+1/x=5平方x^2+2+1/x^2=25x^2+1/x^2=23x^4+x^2+1/x^2=x^2+1

没有问题请采纳,有问题欢迎再追问!

5x³-6x²+15x-28____________________x+2)5x⁴+4x³+3x²+2x+15x⁴+10x³_

自己想

4x的三次方除以（-2x）²-（2x²-x）/（1/2x）=x-4x+2;=2-3x;手机提问的朋友在客户端右上角评价点【满意】即可.

设多项式为ax^3+bx^2+cx+d显然ax^3+bx^2+cx+d=(x^2-x+2)[ax+(a+b)]+(c-a+b)x+d-a-b由于余式等于5x+4所以c-a+b=5,d-a-b=4ax^

原式=[x/(x-1)-x/(x+1)(x-1)]÷[x(x-1)/(x-1)²]=[x/(x-1)-x/(x+1)(x-1)]÷[x/(x-1)]=[x/(x-1)-x/(x+1)(x-1

把每个式子因式分解x的方+5x+4=（x+1）(x+4)x方-5x+6=(x-2)(x-3)………………

(x+1)/x^2-2x^2/(x+1)=1令a=(x+1)/x^2,则x^2/(x+1)=1/aa-2/a-1=0a^2-a-2=0(a-2)(a+1)=0a=2,a=-1a=2(x+1)/x^2=

我看下是不是这么解设y=x/(x^2-1)原方程可化为：2y^2-3/y=2(y≠0)=>2y^2-2y-3=0(y≠0)然后解出y=（1+根号7）/2或y=(1-根号7)/2这样解出来的答案太复杂了

这不是方程,等于多少?再问：说错了，是化简再答：分子分母同乘x,分母合并的(x+1)^2最后的x/(x+1)再问：解清楚点啊再答：你题目是不是(x+1)/(2+((1+x)^2)/x)再问：是这个(X

=(x-4)/(x+1)(x-1)除以(x-4)(x+1)/(x+1)平方+1/(x-1)=(x-4)/(x+1)(x-1)乘以(x+1)平方/(x-4)(x+1)+1/(x-1)=(x-4)/(x+

原式=[(x+y)(x-y)/3(2x+3)]×(2x-6)/(x+y)]=(x-y)(2x-6)/3(2x+3)]=(2x²-6x-2xy+6y)/(6x+9)

[x(3-4X)+2X方(X-1)]除以（-2X）=(3x-4x²+2x³-2x²)÷﹙-2x)=(2x³-6x²+3x)÷﹙-2x)=-x²

原式=[(x+2)/x(x-2)-(x-1)/(x-2)²]×x/(x-4)=[(x²-4-x²+x)/x(x-2)²]×x/(x-4)=[(x-4)/x(x-

2X方+3X-4=5除以2X方+3x2x^2+3x-4=5/(2x^2+3x)设y=2x^2+3x,那么,y-4=5/yy^2-4y-5=0(y-5)(y+1)=0y1=5y2=-12x^2+3x=5

请填写邀请码1766658,再问：?