giai ptr

\(\sqrt{x^2-6x+9}-3x=5\)

Giai ptr

a,\(\sqrt{x^2-6x+9}-3x=5\)

b,\(\sqrt{3x-6}-x=-2\)

Tính

A=\(\dfrac{5+3\sqrt{5}}{\sqrt{5}}+\dfrac{3+\sqrt{3}}{\sqrt{3}+1}-\left(\sqrt{5}+3\right)\)

B=\(\dfrac{30}{\sqrt{6}+1}+\dfrac{2}{\sqrt{6}-2}-\dfrac{6}{3-\sqrt{6}}\)

Tính

A=\(\left(\sqrt{72}-3\sqrt{24}+5\sqrt{8}\right)\sqrt{2}+4\sqrt{27}_{ }\)

B=\(\dfrac{1}{\sqrt{2}-1}+\dfrac{14}{3+\sqrt{2}}\)