Question

if a+1/a = 1 then a^3+1=​

Answer 1

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$a + \frac{1}{a} = 1$

$\frac{ ({a}^{2} + 1) }{a} = 1$

${a}^{2} + 1 = a$

Now

${a}^{3} + 1$

$= (a + 1)( {a}^{2} + 1 - a)$

$= (a + 1)(a - a)$

$= (a + 1) \times 0$

$= 0$

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Answer 2

your answer is 0. hope it helps