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A-1/a=81).a+1/a2).a²-1/a² |
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Answer» Answer: 1) a-1/a = 8 => (a - 1/a)^2 = 8^2 => a^2 + 1/a^2 - 2 = 64 => a^2 + 1/a^2 = 66 => (a + 1/a + 2) = 68 => (a + 1/a)^2 = 68 => a + 1/a = root 68 2) a^2 - 1/a^2 = (a + 1/a)(a - 1/a) = (root 68)(8) = 8root68 = 16 root 7 HOPE IT HELPS PLS MARK IT AS THE BRAINLIEST AND DO FOLLOW ME |
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