On November 12, 2025, Google is highlighting one of the most famous math formulas in the world. Its doodle in India features the quadratic equation ax² + bx + c = 0. The doodle shows how this simple ...

Celebrate Pi Day and read about how this number pops up across math and science on our special Pi Day page. For more than two millennia, mathematicians have produced a growing heap of pi equations in ...