What is a radical!

The roots of the numbers or algebric expressions could be expressed in index form or radical form. Radical form is another form of expressing  roots

x^(1/n)    is the index form or exponent form of nth root of x written like  n√(x). The sign  n√  stands  the nth root of

is called the radical form. In mathematics, radicals could be of any order more than 2. Example:

radicals    order   radicand   index form 

√(10)         2              10           10^(1/2)
3√(11)       3              11            11^(1/3)
a√(y)          a                y           y^(1/a)
x√(Z)         x                Z            Z^(1/x)

radicals    order   radicand   index form