c: \(\Leftrightarrow\dfrac{2\sqrt{x}+5+2\sqrt{x}-3}{2\sqrt{x}-3}< 0\)
\(\Leftrightarrow\dfrac{4\sqrt{x}+2}{2\sqrt{x}-3}< 0\)
\(\Leftrightarrow2\sqrt{x}-3< 0\)
hay 0<x<9/4
d: \(\Leftrightarrow\dfrac{\sqrt{x}-2}{-5\sqrt{x}+1}+\dfrac{1}{2}>0\)
\(\Leftrightarrow\dfrac{2\sqrt{x}-4+1-5\sqrt{x}}{2\left(-5\sqrt{x}+1\right)}>0\)
\(\Leftrightarrow\dfrac{-3\sqrt{x}-3}{2\left(-5\sqrt{x}+1\right)}>0\)
\(\Leftrightarrow-5\sqrt{x}+1< 0\)
\(\Leftrightarrow-5\sqrt{x}< -1\)
=>x>1/25
e: \(\Leftrightarrow\dfrac{5-\sqrt{x}-\sqrt{x}-3}{\sqrt{x}+3}>=0\)
\(\Leftrightarrow-2\sqrt{x}+2>=0\)
\(\Leftrightarrow-2\sqrt{x}>=-2\)
=>0<x<=1
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