Question

Calculati: √(2√3+1) × √(2√3-1)

Answer 1

√(2√3+1) * √(2√3 -1) =
√(2√3+1)*(2√3-1) = (radical mare)
√4*3-1 = (radical mare)
√12-1 = (radical mare)
√11

Answer 2

$= \sqrt{(2 \sqrt{3} +1)*(2 \sqrt{3} -1) } = \sqrt{12-2 \sqrt{3} +2 \sqrt{3} -1} = \sqrt{11}$