Question
If (a2 + 1/a2) = 27, then find
the value of (a3 - 1/a3).Solution
Since, (a2 + 1/a2) = 27 So, a - 1/a = √ {27 - 2} = 5 So, (a3 - 1/a3) = 53 + 3 * 5 = 125 + 15 = 140
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