SCIENCE AND TECHNOLOGY NAKHON SAWAN RAJABHAT UNIVERSITY JOURNAL https://ph02.tci-thaijo.org/index.php/JSTNSRU วารสารวิชาการ วิทยาศาสตร์และเทคโนโลยี (NSRU Science and Technology Journal) Science Center, Faculty of Science and Technology, Nakhon Sawan Rajabhat University en-US SCIENCE AND TECHNOLOGY NAKHON SAWAN RAJABHAT UNIVERSITY JOURNAL 2408-252X On The Ternary Quadratic Diophantine Equation x^2+4y^2=20z^2 https://ph02.tci-thaijo.org/index.php/JSTNSRU/article/view/249885 <p>This research has considered the solutions of the ternary quadratic Diophantine equation x^2+4y^2=20z^2 where x,y and z are integers. There exist at least 4 different formulas for infinite integers solutions of the Diophantine equation.</p> Achariya Nilsrakoo Krittidej Chanthawara Tasanai Rangpung Copyright (c) 2025 SCIENCE AND TECHNOLOGY NAKHON SAWAN RAJABHAT UNIVERSITY JOURNAL http://creativecommons.org/licenses/by-nc-nd/4.0 2025-03-21 2025-03-21 17 25 1 13