Question

x = 3 + 2 root 2 find the value of x square + 1 upon x square​

Answer 1

Answer:

Step-by-step explanation:

Hello Mate

Given x = 3 + 2√2

⇒ x2 = 17 + 12√2

⇒ 1/x2 = 1/(17 + 12√2)

On rationalizing the denominator we get  

1/x2 = (17 – 12√2)

∴ (x2 +1/x2) =(17 + 12√2) + (17 – 12√2)

                   = 34

Hope it helps☺