Question

a+1÷a=2
a3+1÷a3=???​

Answer 1

Answer:

Step-by-step explanation:

{(a +  \frac{1}{a} )}^{2}  = 3 \\ a +  \frac{1}{a}  =  \sqrt{3}  \\  {a}^{3} +  \frac{1}{ {a}^{3} }   \\  {( a +  \frac{1}{a}  )}^{3}  - 3a \frac{1}{a} (a +  \frac{1}{a} ) \\   { (\sqrt{3} )}^{3}  - 3 \sqrt{3}  \\ 3 \sqrt{3}  - 3 \sqrt{3}  = 0

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