Sophie spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -8.6
2 answers:
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<h3>Answer: 
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3*sqrt(7)
3 times the square root of 7
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Explanation:
I'm assuming the V stands for square root. You can write sqrt(63).
The idea is to factor 63 in such a way that one factor is the largest perfect square possible, that way we can pull the root apart to simplify as shown above. The rule I used for the second step is