[x+2+(5)/(2-x)]*(2x-4)/(3-x)

分类: 作业答案 • 2022-07-22 23:18:58

问题描述：

答

=[(x+2)(x-2)/(x-2) -5/(x-2)]×[-2(x-2)/(x-3)]
=(x²-4-5)/(x-2)×[-2(x-2)]/(x-3)
=(x+3)(x-3)/(x-2) ×[-2(x-2)]/(x-3)
=-2(x+3)
=-2x-6