Question

pls tell fast
if u r sure than ans
I will mark brainliest​

Answer 1

18 is the answer

u apply (x -1/X)² =x²+1/x²-2

then put 4²=x²+1/x²-2

then 16+2=x²+1/x²

which is 18

Answer 2

Step-by-step explanation:

up answer is correct

please mark them brainliest ♥️