Question

Find the value of
(Maths)

Answer 1

Final Answer : 7

Steps :
1) Given equation :
${x}^{3} - 7 {x}^{2} - x = 0$
Since, x is not equal to zero.
Divide given equation by
${x}^{2}$

we get,
$x - 7 - \frac{1}{x} = 0 \\ = > x - \frac{1}{x} = 7$