X marks the unknown in algebra – but X's origins are a math mystery

How did the letter x get its enduring role as a symbol of the unknown? A mathematician explains why it’s hard to say for sure.

Philip Dituri on LinkedIn: X marks the unknown in algebra – but

Mathematics – information, recherche et analyse – La Conversation

Knowledge of self': How a key phrase from Islam became a pillar of

X marks the unknown in algebra – but X's origins are a math mystery

1. What is Algebra?: Solving for unknowns - Head First Algebra [Book]

The Letter 'X' Stands for the Unknown, the Mysterious, and the Intangible. Why? - Atlas Obscura

Innovation and Certainty

View question - Why do we use x to represent an unknown number?

X Marks the Spot: A Closer Look at Everyone's Favorite Variable

Language – News, Research and Analysis – The Conversation – page 2