Square root of 2: Euclid proved that √

Euclid proved that √ 2 (the square root of 2 ) is an irrational number. He used a proof by contradiction. First Euclid assumed √ 2 was a rational number. Learn about the square root of 2 , a positive real number that squared equals 2 . Find out its history, representations, decimal value, and computation algorithms. The square root of 2 is the number y such that y² = 2 . Here you can learn all about it; in addition to a calculator you will like. Square Roots, odd and even: There are 2 possible roots for any positive real number. A positive root and a negative root . Given a number x, the square root of x is a number a such that a2 = x. Square roots is a specialized form of our common roots calculator.