Tính a=\(\dfrac{\sqrt[3]{10+6\sqrt{3}}.\left(\sqrt{3}-1\right)}{\sqrt{6+2\sqrt{5}}-5}\)
b, a= \(\sqrt[3]{2-\sqrt{3}}+\sqrt[3]{2+\sqrt{3}}\) CMR \(\dfrac{64}{\left(a^2-3\right)^3}-3a\) ∈ Z

x=(\(\sqrt{3}+1\)) . \(\sqrt[3]{6\sqrt{3}-1}\)-\(\sqrt{7+4\sqrt{3}}\)
tính A = \(\dfrac{x^4-4^2+3}{x^{2023}}\)