SOLUTION: Give the principal roots of each of the following. ( for square roots, assume the principal square is required unless the problem indicates otherwise.) 5. √49=____ 6. 3

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Question 478896: Give the principal roots of each of the following. ( for square roots, assume the principal square is required unless the problem indicates otherwise.)
5. √49=____
6. 3√-27=___
Found 2 solutions by stanbon, ewatrrr:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Give the principal roots of each of the following. ( for square roots, assume the principal square is required unless the problem indicates otherwise.)
5. √49= 7
----
If that 3 indicates cube root the answer is
6. 3√-27= -3
If the problem is 3*sqrt(-27) the answer is 3*3*sqrt(3)i
= 9sqrt(3)i
====================
Cheers,
Stan H.
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi,

principal square root: The positive square root of a positive real number

   = ± 7    |principal square root is 7



 = ± 9isqrt(3)  |principal square root is 9isqrt(3)

 

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