Express each of the following as pure radicals 2√6
Answers
Given \: exponential \:form : (21)^{\frac{1}{8}}Givenexponentialform:(21)
8
1
\underline { \pink { radical \:form \:of \:the \: number: }}
radicalformofthenumber:
= \sqrt[8] {21}=
8
21
\underline { \blue{ Definition : }}
Definition:
\begin{gathered} The \: positive \: n^{th} \: root \:of \: \orange {a} \\is \: called \: a \: surd\: or \: a \:radical . \end{gathered}
Thepositiven
th
rootofa
iscalledasurdoraradical.
\begin{gathered} Here , \orange {a} \: is \: called \: radicand , \\ < /p > < p > \sqrt[n] \:is \: called \: radical \:sign . \\\green {n} \\is \: called \: the \: degree \: of \:radical \end{gathered}
Therefore.,
\begin{gathered} \red{ radical \:form \: of \: (21)^{\frac{1}{8}}}\\\green { = \sqrt[8] {21}}\end{gathered}
radicalformof(21)
8
1
=
8
21
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