x No Plagiarism!j2br1jqxf4qYmXDxizJ8posted on PENANA How to math?8964 copyright protection559PENANAbeEguJe05i 維尼Did I do correctly?8964 copyright protection559PENANATVS9OijnhR 維尼 172.70.100.134ns 172.70.100.134da2