The quadratic formula is really useful, but its derivation is confusing to many. Like what is the point of "completing the square" anyway? In this video, I show how "completing the square" has a geometric interpretation--you are actually making the areas of two squares equal to each other!
Blog post (text/image summary): [ Ссылка ]
You can read more about the history of the quadratic formula and its geometric roots from Cornell Mathematics professor David W. Henderson: [ Ссылка ]
While researching this post, I came across a website that offers a visual interpretation of the quadratic formula that helped me design the graphics: [ Ссылка ]
Special thanks to Patrons!
Kyle
Alberto Nishikawa
Henry Segerman
If you like my videos, you can support me at Patreon:
[ Ссылка ]
Connect on social media. I update each site when I have a new video or blog post, so you can follow me on whichever method is most convenient for you.
My Blog: [ Ссылка ]
Twitter: [ Ссылка ]
Facebook: [ Ссылка ]
Google+: [ Ссылка ]
Pinterest: [ Ссылка ]
Tumblr: [ Ссылка ]
Instagram: [ Ссылка ]
Patreon: [ Ссылка ]
Newsletter (sent only for big news, like a new book release): [ Ссылка ]
If you buy from the links below I may receive a commission for sales. This has no effect on the price for you.
My Books
"The Joy of Game Theory" shows how you can use math to out-think your competition. (rated 3.8/5 stars on 31 reviews)
[ Ссылка ]
"The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias" is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 4.6/5 stars on 3 reviews)
[ Ссылка ]
"Math Puzzles Volume 1" features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.
[ Ссылка ]
"Math Puzzles Volume 2" is a sequel book with more great problems. (rated 4.3/5 stars on 4 reviews)
[ Ссылка ]
"Math Puzzles Volume 3" is the third in the series. (rated 3.8/5 stars on 5 reviews)
[ Ссылка ]
"40 Paradoxes in Logic, Probability, and Game Theory" contains thought-provoking and counter-intuitive results. (rated 4.3/5 stars on 12 reviews)
[ Ссылка ]
"The Best Mental Math Tricks" teaches how you can look like a math genius by solving problems in your head (rated 4.7/5 stars on 4 reviews)
[ Ссылка ]
"Multiply Numbers By Drawing Lines" This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 5/5 stars on 3 reviews)
[ Ссылка ]
