A visual proof that a^2 – b^2 = (a + b)(a – b)
697 by beardyw | 191 comments on Hacker News.
-
By BY THE LEARNING NETWORK from NYT The Learning Network https://ift.tt/2Gh2Q2k via IFTTT
-
U.S. Postal Service starts nationwide electric vehicle fleet, buying 9,250 EVs 444 by lxm | 336 comments on Hacker News.
-
Learn Postgres at the Playground – Postgres compiled to WASM running in browser 543 by samwillis | 144 comments on Hacker News.