SOLUTION: How would you explain square roots, cube roots, nth roots, and radicals? What are some limitations of square root?

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Question 91739: How would you explain square roots, cube roots, nth roots, and radicals? What are some limitations of square root?

Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
How would you explain square roots: a number that is multiplied twice.
For example: the square root of 9 is 3 because 3x3=9. Three is the number that is multiplied twice to equal 9.
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cube roots: a number that is multiplied three times. For example:
The third root of 27 is 3 because 3x3x3=27. The number (3) is multiplipied three times to equal 27.
Another example: the third root of 64 is 4 because 4 is multiplied three times to equal 64 (4x4x4=64)
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nth roots: a number that is multiplied nth number of times to equal the radicand (the number underneath the radical sign).
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What are some limitations of square root? the radicand must always be equal to or greater than zero (a positive number). Because squaring any number will result in a positive number. For example:
(-2)(-2)=4
and (+2)+2)=4 also.
Therefore the square root of 4 is +2 or -2.