Question

If x =( 4+√15) / 2,find the value of 16x²+1/x² *​

Answer 1

Answer: x = 4 - √15

x² = 16 + 15 - 8√15 = 31 - 8√15

1/x² = 1/31 - 8√15 = (31+8√15) / 961-960 = 31+8√15

x² + 1/x² = 62

Answer 2

Step-by-step explanation:

254 is the right answer

hope it helps