SOLUTION: The question is: Simplify: (3 times the square root of 5)^3 what i did so far was wrote the whole equation out. As (3 times the square root of 5) 3 times. Then i multiplied 3,

Question 205589: The question is: Simplify: (3 times the square root of 5)^3
what i did so far was wrote the whole equation out. As (3 times the square root of 5) 3 times. Then i multiplied 3, 3 times to get 27. then i multiplied 5, 3 times to get 125. I don't know what to do next. This is a multiple choice question. The choices are: 15, 125, 5, and 5,-5.
Found 2 solutions by Alan3354, jim_thompson5910:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Simplify: (3 times the square root of 5)^3

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That's not one of the choices. Is this what you meant?
Or was it (cube root of 5)^3 ?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
If the problem is , then

Note: ... recall that the cube root and the exponent of 3 undo each other.