Question

if x is equal to 2 + root 3, find { X +1/x}power 3​

Answer 1

Answer: 86 / 85

Step-by-step explanation:

x = 2+ √3

( x+1 / x )^3

=( 2+ √3 )^3 + 1^3  /  ( 2+ √3 )^3

=8+√27 + 1 / 8+ √27

=8+√27 + 1 / 8+ √27 * 8+√27 / 8+ √27

=64+√729 + 1 / 64+√729

=64+27+1 / 64+27

=86 / 85