plz don't spamm....
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6) a= 6-√35
⇒so 1/a = 1/6-√35 = 6+√35/(6²-35) = 6+√35
⇒ (a+1/a) = 12
⇒ Now, a² + 1/a² = [a + 1/a]² -2
⇒ a² + 1/a² = 12² - 2 = 142
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Answer...of 7th one....is 1154.....
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