You would write the latter, "Max's." It is generally accepted that to make a proper noun that ends in an "x' possessive, you need to add an "'s." The only exceptions are some French and other similar words with a silent "x" like "Bordeaux'" and "Vorreax'."
It's the same as English.
The word max contains a short A vowel sound (ah as in apple).
The antecedent for the relative pronoun 'who' is Max.The pronoun 'who' introduces the relative clause 'who is from Switzerland'.The relative clause 'who is from Switzerland' provides information that 'relates' to the antecedent noun 'Max'.
Max Baldry is fluent in English and is also proficient in French and German.
Max Planck Institute for Psycholinguistics was created in 1980.
Max's or Maxs'
max the stupid likes soccer
its maxs game show
Max's gram comes to check in Max's room to make sure he was okay.
ask max "give me a hint.you get the deilivery arcade blueprint
maxs greens middle name is Scott
I thinks MAxs height is 6 feet or higher.
max russo's real name is Jake T. Austin
Maxs dad says i never killed anyone
20.9 mpg
Yes They Are.
ماكس