A math historian explores how "x" came to stand in for an unknown quantity
A literal translation of the Ephrata Christmas greeting [of 1769
X marks the unknown in algebra – but X's origins are a math mystery
The Mysterious Allure of a Mogul's Favorite Letter - WSJ
Articles tagged as Ancient Greece
Articles tagged as Christmas
Articles by REPRINT AUTHOR PLACEHOLDER
Why is Elon Musk obsessed with the letter X?
Articles tagged as Ancient Civilizations
X marks the unknown in algebra – but its origins are truly a math
How Did X Become the Unknown (and so much else)?