If a=1/ (7 − 4√3) , find the value of a2 + 1/a2.
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2a + 1 / 2a
(Put the value of a )
{ 2 x [ 1 / ( 7 - 4√3 ) ] + 1 } / { 2 x [ 1 / ( 7 - 4√3 ) } }
[ 2 / ( 7 - 4√3 ) + 1 ] / [ 2 / ( 7 - 4√3 ) ]
[ ( 2 + 7 - 4√3 ) / ( 7 - 4√3 ) ] / [ ( 2 ) / ( 7 - 4√3 ) ]
[ ( 9 - 4√3 ) / ( 7 - 4√3 ) ] / [ ( 2 ) / ( 7 - 4√3 ) ]
( 9 - 4√3 ) / 2 OR √3 ( 3√3 - 4 ) / 2 ...
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