Question
If (a2 + 1/a2) = 18, then find
the value of (a3 - 1/a3).Solution
Since, (a2 + 1/a2) = 18 So, a - 1/a = √ {18 - 2} = 4 So, (a3 - 1/a3) = 43 + 3 * 4 = 64 + 12 = 76
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