SubArea: Expressions with exponents and radicalsLevel: AProject ID: 1003099601Accepted: 1Clonable: 0Easy: 0Given the numbers \( x=1+2\sqrt2 \) and \( y=\sqrt2-1 \), calculate \( xy \).\( 3-\sqrt2 \)\( 4-\sqrt2 \)\( 3 \)\( -\sqrt2 \)
