là đường đời vì có 100 tuổi đời

\(\sqrt{3x+19}-5=x\)
\(2\sqrt{x}=\sqrt{9x-3}\)

\(\left(\dfrac{x-2\sqrt{x}}{x-4}-1\right):\left(\dfrac{4-x}{x-\sqrt{x}-6}-\dfrac{\sqrt{x}-2}{3-\sqrt{x}}-\dfrac{\sqrt{x}-3}{\sqrt{x}+2}\right)\)
voi x\(\ge0,x\ne4;9\)

\(2\sqrt{a}-\dfrac{5}{a}\sqrt{9a^3}+a\sqrt{\dfrac{4}{a}}-\dfrac{2}{a^2}\sqrt{25a^2}\)
a>0

(\(\dfrac{1}{\sqrt{x}-\sqrt{x-1}}-\dfrac{x-3}{\sqrt{x-1}-\sqrt{2}})\left(\dfrac{2}{2-\sqrt{x}}-\dfrac{\sqrt{x}+\sqrt{2}}{2\sqrt{x}-x}\right)\)
Rut gon bieu thuc

C=\(\sqrt{x\left(x+1\right)\left(x+2\right)\left(x+3\right)+5}\)
tìm gTNN