If a= 3 + √2, find a + 1/a
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Answer:
a = 3 + root 2
1 / a = 1 /( 3 + root 2 )
1 / a = 3 - root 2 / 5
a + 1 / a = 3 + root 2 + (3 - root 2)/5
= 6/5
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