What’s the viral math equation? READER'S DIGEST, GETTY IMAGES. You’ve no doubt seen this math problem (or one similar to it) making the rounds on Facebook: 4×4-4÷4+4.

Mathematics: Facts about counting, equations, and infamous unsolved problems. References. By Tia Ghose last updated 23 May 2025 ... Most famous equation: Einstein's E = mc2, ...

Similar to Obsidian's equation editor, Google Docs' equations editor is based on LaTeX syntax. As a result, you can use ...

Math Notes allows you to write equations directly on your iPad using a stylus, using advanced handwriting recognition technology to convert handwritten input into digital text.