\(\left(\sqrt{3}-\sqrt{2}\right)\sqrt{5+2\sqrt{6}}\)

\(\sqrt[]{5+2\sqrt[]{6}}-\sqrt[]{5-2\sqrt{6}}\)

\(\frac{2+\sqrt{2}}{1+\sqrt{2}}-\frac{3-\sqrt[]{3}}{2\sqrt[]{3}-2}+\frac{\sqrt[]{6}+\sqrt[]{3}}{2\sqrt[]{2}+2}\)

\(\frac{1}{\sqrt[]{5}-1}-\frac{1}{\sqrt[]{5}+1}\)

\(\frac{x}{x-2}\)+\(\sqrt[]{x-2}\)

Tìm x

a)(2x+1)2-4(x+2)2 =9

b)(3x-1)2 +2(x+3)2 +11(x+1)(1-x)=6

c)(x+1)3 - x2 (x+3)=2

d)(x-2)3 -x(x+1)(x-1)+6x2 =5

e)(x-3)(x2 +3x +9)-x(x+4)(x-4)=5

g)(x-2)3 -(x+5)(x2 -5x+25)+6x2 =11