*The*
"Radical
Symbol"
is a
shorthand
notation
which
stands
for
the

roots of
the number (or
expression)
in the
radicand.

For
example
, the
cube
root
of
8
stands
for the
number that can
be multiplied
by itself three
times (cubed)
to equal 8:

Since, 2
*
2 *
2 = 8, the cube
root of 8 is
2.

The 3 in the
expression is
called the
root
index ,
and the 8 is
called the
radicand
.