Question

radical din 2 plus 1 supra radical din 2 minus 1 =?

Answer 1

$\frac{ \sqrt{2}+1 }{ \sqrt{2}-1 }= \frac{( \sqrt{2}+1)^2 }{( \sqrt{2}-1)( \sqrt{2}+1) } = \frac{2+2 \sqrt{2}+1 }{2-1} =3+2 \sqrt{2}.$