Mastering Number Systems

Natural numbers are sometimes written as ______ for short.

The set of natural numbers, { 1,2,3,4,5,. }, is sometimes written ______ for short.

The sum of any two natural numbers is also a ______ number.

The integers are the set of real numbers consisting of the ______ numbers, their additive inverses and zero.

The set of integers is sometimes written ______ or Z for short.

Use this calculator to find the principal square root and roots of real numbers. Inputs for the radicand x can be positive or negative real ______

The answer will also tell you if you entered a perfect ______.

The answer will show you the complex or imaginary solutions for square roots of negative real ______.

There are 2 possible roots for any positive real ______. A positive root and a negative root.

Note that any positive real number has two square roots, one positive and one ______.