Question

$(4 + \sqrt{2 \times 3) \times ( \sqrt{2 - 1)} }$

Answer 1

$(4 \sqrt{2} + 3) \times ( \sqrt{2} - 1) = \\ \\ 8 - 4 \sqrt{2} + 3 \sqrt{2} - 3 = \\ \\ 8 - 1 \sqrt{2 } - 3 = \\ \\ 5 - \sqrt{2}$