x No Plagiarism!HusHWWP35fw0g4hv9FRRposted on PENANA How to math?8964 copyright protection743PENANAKstYzoT8CI 維尼Did I do correctly?8964 copyright protection743PENANAU8ZQvQwk58 維尼18.222.183.98ns18.222.183.98da2