The use of the letter x as a mathematical unknown is a relatively modern convention. Algebra has been around for a lot longer. Daryl Benson/Stockbyte via Getty Images You might be most familiar with x ...
TODAY’S WORD — ALGEBRA (ALGEBRA: AL-juh-bruh: A branch of mathematics.) Average mark 27 words Time limit 40 minutes Can you find 34 or more words in ALGEBRA? The list will be published tomorrow.