Question

If x =(2+√5), find the value of x^3-1/x^3​

Answer 1

Answer:

x is 7 in the question OKAY

Answer 2

Answer:

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

Use this and find out yourself.