2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and the only even prime number. Because it forms the basis of a duality, it has …

The superscript two, ², is used in mathematics to denote the square of a number or variable. It also represents the second derivative in calculus when used as a notation for differentiation.

The exponent of a number says how many times to use the number in a multiplication. In 82 the 2 says to use 8 twice in a multiplication, so 82 =...

In a connection with nimbers, these numbers are often called Fermat 2-powers. The numbers form an irrationality sequence: for every sequence of positive integers, the series converges to …

Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

The number two (2) is the second positive integer and the first prime number. It is even, and is the only even prime (the primes other than 2 are called the odd primes). The number 2 is also …

A Power of 2 Calculator is a simple yet powerful tool that computes 2 raised to the power of any given number (2^n). It helps users quickly determine exponential values, making it essential …

"Second degree" just means the variable has an exponent of 2, like x 2. It is the next major step after linear equations (where the exponent is 1, like x). We already have experience in solving, …

Nov 7, 2025 · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari २ (2)), from a cursive form of two lines to represent the number two. See 2 § Evolution for more.

In math, the squared symbol (2) is an arithmetic operator that signifies multiplying a number by itself. The "square" of a number is the product of the number and itself.