Question

If x= √5+2, Then find the value of x² + 1/x²​

Answer 1

Answer:

18

Step-by-step explanation:

HEY MATE YOUR ANSWER IS HERE ^_^

$X = \sqrt{5} +2$

$x^{2} = 9 + 4\sqrt{5}$

$1/x^{2} = 1/(9+4\sqrt{5}) = 9-4\sqrt{5}$

THEREFORE

$x^{2} +1/x^{2} = 9+4\sqrt{5} +9-4\sqrt{5} = 18$

PLEASE MAKE ME A BRAINLIST ANSWER FOR THE QUESTION.