The first step for solving this expression is to convert the decimal number into a fraction. 6[tex] \sqrt{ \frac{2}{5} } [/tex] Remember that in order to take a root of a fraction,, you must take the root of the numerator and denominator separately. This will look like the following: 6 × [tex] \frac{ \sqrt{2} }{ \sqrt{5} } [/tex] Now calculate the product. [tex] \frac{6 \sqrt{2}}{ \sqrt{5} } [/tex] Lastly,, rationalize the denominator to find your final answer. [tex] \frac{6 \sqrt{10} }{5} [/tex] Let me know if you have any further questions. :)