已知分式-6(x+3)/x^2-9的值是正整数,求x的整数值?

问题描述:

已知分式-6(x+3)/x^2-9的值是正整数,求x的整数值?
帮帮忙阿,急阿

-6(x+3)/(x^2-9)
=-6(x+3)/(x+3)(x-3)
=-6/(x-3)
=6/(3-x)是正整数
x的整数值:2,1,0