Question

If x=3+2√2, find x^2+1/x^2​

Answer 1

Correct Question:-

If x=3+2√2, find x^2+1/x^2

Answer:

1/x=3+2√2

x-1/x=3-2√2-3-2√2=-4√2

x^2-1/x^2=(-4√2)^2+2=32+2=34