Toán Lớp 8: (x căn 6/x + căn 2x/3 +căn 6x) / căn 6x
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Toán Lớp 8: (x căn 6/x + căn 2x/3 +căn 6x) / căn 6x
Comments ( 1 )
Dkxd:x > 0\\
\left( {x\sqrt {\dfrac{6}{x}} + \sqrt {\dfrac{{2x}}{3}} + \sqrt {6x} } \right):\sqrt {6x} \\
= \left( {\sqrt x .\sqrt 6 + \sqrt {\dfrac{{6x}}{9}} + \sqrt {6x} } \right):\sqrt {6x} \\
= \left( {\sqrt {6x} + \dfrac{{\sqrt {6x} }}{3} + \sqrt {6x} } \right):\sqrt {6x} \\
= \dfrac{{7\sqrt {6x} }}{3}:\sqrt {6x} \\
= \dfrac{7}{3}
\end{array}$