Question 760952

{{{3 sqrt (56)=3 sqrt (8*7)=3 sqrt (4*14)=3*2 sqrt (14)=6sqrt (14)}}}

choices:

6 square root 24
12 square root 7
15 square root 6
8 square root 28

none of choices above are correct answer, unless they made mistake with first choice 6 square root 24 writing {{{24}}} instead {{{14}}}