Tìm Min,Max

A=2\(\sqrt{x-2}\) + 3\(\sqrt{6-x}\)

Tìm Min,Max

B=\(\sqrt{-x^2+2x+4}\)

x\(^2\)-2x-1=2(x-1)\(\sqrt{x^2+2x-1}\)

x\(\sqrt{x+1}\)+\(\sqrt{3-x}\)=2\(\sqrt{x^2+1}\)

\(\sqrt{2x-\dfrac{5}{x}}\) - \(\sqrt{x-\dfrac{1}{x}}\) = x-\(\dfrac{4}{x}\)

Giải pt

x\(^2\)+2x+4=3\(\sqrt{x^3+4x}\)

\(\sqrt{\dfrac{x^2}{4}+\sqrt{x^2-4}}\) = 8-x\(^2\)

Giải PT

13\(\sqrt{x-1}\) + 9\(\sqrt{x+1}\) = 16x

Giải PT

x+\(\sqrt{4-x^2}\) = 2+3x\(\sqrt{4-x^2}\)

Giải phương trình

\(\sqrt{2x^2-8x+12}\) + \(\sqrt{3x^2-12x+13}\) =3