Question

If x = √6 +√5 find the value of x² + 1/x².​

Answer 1

Answer:

x² + 1/x²= 22

Step-by-step explanation:

x = √6 +√5

x² = 6+5+2√30

x² = 11+2√30

1/x²= 11-2√30

x² + 1/x² = 11+2√30+ 11-2√30

= 22

so, x² + 1/x²= 22