Answer :
Final answer:
The square root of 81 can be both 9 and -9. However, typically, we refer to the positive square root, which is 9.
Explanation:
The symbol '√' represents the square root in mathematics. When you see '√81', it means we are looking for a number that, when multiplied by itself, will give us the number 81.
In our case, both positive 9 and negative -9, when squared (9*9 or -9*-9), give us the number 81. Therefore, the square root of 81 includes both 9 and -9. However, by convention, we typically refer to the positive square root, which in this particular problem is 9.
However, the recommendations provided in the classroom or outlined by your teacher may differ, so please always validate with your instruction resources if you have to consider both positive and negative roots or only the positive ones.
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