what are real numbers, exponents & radicals?

In mathematics, a real number is a value of a continuous quantity that can represent a distance along a line (or alternatively, a quantity that can be represented as infinite decimal expansion). The adjective real line in this content was introduced 17th century by Rene Descartes, Who distinguished between real imaginary roots of polynomials. The real number include all the rational numbers, such as the integer and the fraction 4/3, and all the irrational number such as √2 (1.4142135......, the square root of 2, an irrational algebraic number). Include within the irrationals are the transcendental number such as π (the value of pie 3.14159265......).In addition to measuring distance, real numbers can be used to measure quantities,
The set of real numbers is denoted using the symbol R.
Exponents
An exponent indicates how many copies of a number (known as the base) are multiplied together.
For example: In the number 5^4, 5 is the base and 4 is the exponents. This can be read as 5 to the power of 4.therefore in the example of four copies of 5 are multiplied together which means that 5^4=5•5•5•5=3125
Radicals
In mathematics, the radical sign, radical symbol, root symbol, radix, or surd is a symbol for the square root or higher-order root of a number. The square root of a number x written as √x
While the nth root of x.
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