Question

a+1/a=1 then find a^3+1=??​

Answer 1

Answer:

$given \: \frac{a { }^{2} + 1 }{a} = 1 \: so \: a {}^{2} - a + 1 = 0 \: i.e \: a = - w \: or \: - w {}^{2} \: (complex \: number \: concept) \: so \: {a}^{3} + 1 = - {w}^{3} + 1 = - 1 + 1 = 0 \: ans$