(x^2-6x+9)÷x^2-9x+18/x+3

分类: 作业答案 • 2022-02-21 21:42:14

问题描述：

答

(x^2-6x+9)÷x^2-9x+18/x+3
=(x-3)^2÷(x+3)(x-3)+18/(x+3)
=(x-3)/(x+3)+18/(x+3)
=(x+15)/(x+3)