Question

If x=9+√5 find the value of x square plus1 divide x square

Answer 1

Answer:126.26

Step-by-step explanation:

x = 9+✓5

so, 1/x = 1/9+√5

x+1/x = (693+75√5)/76

x²+1/x²= (x+1/x)2-2*x*1/x

= [(693+75√5)/75]²-2

= 126.26