x/(x-2)
=(x-2+2)/(x-2)
=(x-2)/(x-2)-2/(x-2)
=1-2/(x-2)是整数则2/(x-2)是整数
所以x-2是2的约数
所以x-2=1,-1,2,-2
x=3,1,4,0
标签:整数,已知
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x/(x-2)
=(x-2+2)/(x-2)
=(x-2)/(x-2)-2/(x-2)
=1-2/(x-2)是整数则2/(x-2)是整数
所以x-2是2的约数
所以x-2=1,-1,2,-2
x=3,1,4,0
标签:整数,已知