Question

Пліс допоможіть з 2.150 дуже потрібно!

Answer 1

$\displaystyle\bf\\\frac{2-\sqrt{2} -\sqrt{3} }{2+\sqrt{2}-\sqrt{3} } =\frac{2-(\sqrt{2} +\sqrt{3}) }{2+(\sqrt{2}-\sqrt{3} ) } =\frac{[2-(\sqrt{2} +\sqrt{3})]\cdot[2-(\sqrt{2} -\sqrt{3} )] }{[2+(\sqrt{2}-\sqrt{3} ) ]\cdot[(2-(\sqrt{2} -\sqrt{3})] } =\\\\\\=\frac{4-2\sqrt{2}+2\sqrt{3}-2\sqrt{2}+2-\sqrt{6} -2\sqrt{3} +\sqrt{6} -3 }{4-2+2\sqrt{6} -3} =\\\\\\=\frac{3-4\sqrt{2} }{2\sqrt{6} -1}$