Sub.: Math, Chapter: 3rd, Topics: Algebra, Md. Mahsin Haydar- Assistant Teacher, Dargahpur S.K.R.H. Higher Secondary School, Assasuni, Satkhira., শ্রেণি: নবম-দশম , বিষয়: গণিত, অধ্যায়: বীজগাণিতিক রাশি
MD. MAHSIN HAYDAR, Dargapur, Sridharpur, Khasbagan, Ramnagar, Hossenpur School and College, ASHASUNI, SATKHIRA