Question

a+1/a=1 find the value of (a qube+1)=?

Answer 1

$a + \frac{1}{a} = 1 \\ \\ {a}^{3} + \frac{1}{ {a}^{3} } = ( {a + \frac{1}{a} })^{3} - 3(a + \frac{1}{a} ) \\ = {1}^{3} - 3 \times 1 \\ = 1 - 3 \\ = - 2$