化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/11/08 03:45:37

化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)
化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4

[3x/(x+2)-x/(x-2)]÷x/(x^2-4)
=[3x(x-2)-x(x+2)]/(x+2)(x-2)*(x^2-4)/x
=(3x^2-6x-x^2-2x)/(x+2)(x-2)*(x^2-4)/x
=(2x^2-8x)/x
=2x-8

x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 3x/(x-2)-x/(x+2)÷2x/(x-4)化简 x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4) 2x+3x+4x+5x+x+6x+7x=100 x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002 (x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 约分 (X的平方+4x+3)(2x-x)^/(X^+X)(X^+X-6), 2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|