ANSWER
[tex]2 \sqrt{15} [/tex]
EXPLANATION
We want to simplify
[tex] \sqrt{60} [/tex]
There is a perfect square under the radical sign:
[tex] \sqrt{4 \times 15} [/tex] Split the radical sign for both factors:
[tex] \sqrt{4} \times \sqrt{15} [/tex]
Simplify the first factor
[tex]2 \sqrt{15} [/tex]
The second option is correct.
