二次方程式の計算⑤（解の公式）

[🗣I want to share the joy of solving math problems] Turn math into fun! Subscribe here▶︎ https://bit.ly/39v2H5B / Twitter here   / cefojw7wwv5x6z0   I live with a hedgehog🦔 Watch the video here▶︎    • ハリネズミのログ   I'm on Instagram. Search for Teppei Kawabata! I've started online professional tutoring!! Kawabata will teach you directly. If you're interested in final exams, exam preparation, or simply wanting to become a math expert, please send me a message here: teppei25102510＠yahoo.co.jp About Teppei Kawabata By day, I teach math as a part-time teacher at a private junior high and high school, and at night, I teach math at a cram school. I've taught at Meiji University Meiji, Hongo University, and Senzoku Gakuen. I started teaching at Thomas, a private tutoring school, during my university days, and from the age of 20 I taught at Waseda Academy, teaching for high school and university entrance exams. Recently, I've been feeling a little bored with my job (wry smile) and wanted to start something new, but I don't have anything to do other than math! That's why I wanted to start teaching on YouTube. I'll do my best to make my videos useful to a wide range of people, including the students I teach, teachers involved in math, and students taking entrance exams! If you like my channel, please subscribe 😊