Maths prove it

For maths I have been learning Square root of numbers with perfect Squares and Write multiplication Expression using exponents here is A photo below of me doing A square roots of numbers with perfect Squares and here is the photo of write multiplication expression using exponents                                                                                                                                                                                                                                                                 2.2.2 is 2 because the number is 2 And how many 2 are there 3 so there is                                                      your Answer.                                                                                                                                                  

The square root of 289 is 17 so your answer is 17.