please answer this question with proper step no unnecessary answer
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Step-by-step explanation:
a+1/a = 5
cubing both sides:
a^3 + 1/3^3 + 3(a+1/a) = 125
a^3 + 1/3^3 + 3(5) = 125
a^3 + 1/3^3 = 125-15 = 110
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