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Basic of Logarithms
medium
$\sqrt {[12\sqrt 5 + 2\sqrt {(55)} ]} $ નું વર્ગમૂળ મેળવો.
A
${5^{1/2}}[\sqrt {(11)} + 1]$
B
${5^{1/2}}[\sqrt {(11)} - 1]$
C
${5^{1/4}}[\sqrt {(11)} + 1]$
D
${5^{1/4}}[\sqrt {(11)} - 1]$
Solution
(c) $\sqrt {12\sqrt 5 + 2\sqrt {55} } = \sqrt {\sqrt 5 (12 + 2\sqrt {11} )} $
$ = {5^{1/4}}\sqrt {11 + 1 + 2\sqrt {11} } = {5^{1/4}}(\sqrt {11} + 1)$
Standard 11
Mathematics