\(B=\frac{\sqrt{3-2\sqrt{2}}-\sqrt{3}}{\sqrt{5-2\sqrt{6}}+1}=\frac{\sqrt{\left(\sqrt{2}\right)^2-2.1.\sqrt{2}+1^2}-\sqrt{3}}{\sqrt{\left(\sqrt{2}\right)^2-2.\sqrt{2}.\sqrt{3}+\left(\sqrt{3}\right)^2}+1}=\frac{\sqrt{\left(\sqrt{2}-1\right)^2}-\sqrt{3}}{\sqrt{\left(\sqrt{3}-\sqrt{2}\right)^2}+1}=\frac{\sqrt{2}-1-\sqrt{3}}{\sqrt{3}-\sqrt{2}+1}=-1\)