9. Given $x^{2}+y^{2}+z^{2}=35$, then the maximum value of $x+3 y+5 z$ is greater than the minimum value by

保留源文本的换行和格式，翻译结果如下：

9. Given $x^{2}+y^{2}+z^{2}=35$, then the maximum value of $x+3 y+5 z$ is greater than the minimum value by
$70$